Publications and communications of Yves Beckers

Articles in scientific journals with peer reviewing

A. Ndona Nzey, B. Kambashi, Y. Beckers, C.-H. Moulin, and J. Bindelle. "Contribution of traditional goat farming systems to the sustainable intensification of smallholder agriculture in sub-Saharan Africa: The example of the western part of the Democratic Republic of Congo." Farming System, 2, no. 2 (January 2024): 100079. doi:10.1016/j.farsys.2024.100079

C. Li, S. Li, G. Dang, R. Jia, S. Chen, X. Deng, G. Liu, Y. Beckers, and H. Cai. "Screening and characterization of Bacillus velezensis LB-Y-1 toward selection as a potential probiotic for poultry with multi-enzyme production property." Frontiers in Microbiology, 14 (17 April 2023): 1143265. doi:10.3389/fmicb.2023.1143265

C. Li, S. Li, Y. Zhu, S. Chen, X. Wang, X. Deng, G. Liu, Y. Beckers, and H. Cai. "Improving the Nutritional Value of Plant Protein Sources as Poultry Feed through Solid-State Fermentation with a Special Focus on Peanut Meal—Advances and Perspectives." Fermentation, 9, no. 4 (07 April 2023): 364. doi:10.3390/fermentation9040364

C. Li, S. Wang, S. Chen, X. Wang, X. Deng, G. Liu, W. Chang, Y. Beckers, and H. Cai. "Screening and Characterization of Pediococcus acidilactici LC-9-1 toward Selection as a Potential Probiotic for Poultry with Antibacterial and Antioxidative Properties." Antioxidants, 12, no. 2 (17 January 2023): 215. doi:10.3390/antiox12020215

H. Amamou, M. Mahouachi, L. M. Dale, Y. Beckers, and H. Hammami. "Vulnerability assessments in dairy cattle farms based on individual sensitivity to heat stress." International Journal of Biometeorology, 66, no. 7 (July 2022): 1403-1414. doi:10.1007/s00484-022-02285-3

J. Jabri, H. Ammar, K. Abid, Y. Beckers, H. Yaich, A. Malek, J. Rekhis et al. "Effect of Exogenous Fibrolytic Enzymes Supplementation or Functional Feed Additives on In Vitro Ruminal Fermentation of Chemically Pre-Treated Sunflower Heads." Agriculture, 12, no. 5 (May 2022): 696. doi:10.3390/agriculture12050696

V. Tosar, G. Rousseau, V. Decruyenaere, Y. Beckers, Y. Larondelle, and E. Froidmont. "Red clover-rich grassland increases equol concentration in eggs from free-range laying hens." British Poultry Science, 62, no. 6 (December 2021): 840-845. doi:10.1080/00071668.2021.1929069

Y. Chen, Y. Xie, K. M. Ajuwon, R. Zhong, T. Li, L. Chen, H. Zhang, Y. Beckers, and N. Everaert. "Xylo-Oligosaccharides, Preparation and Application to Human and Animal Health: A Review." Frontiers in Nutrition, 8 (08 September 2021): 731930. doi:10.3389/fnut.2021.731930

Y. Chen, Y. Xie, R. Zhong, H. Han, L. Liu, L. Chen, H. Zhang, Y. Beckers, and N. Everaert. "Effects of graded levels of xylo-oligosaccharides on growth performance, serum parameters, intestinal morphology, and intestinal barrier function in weaned piglets." Journal of Animal Science, 99, no. 7 (01 July 2021). doi:10.1093/jas/skab183

Y. Chen, Y. Xie, R. Zhong, L. Liu, C. Lin, L. Xiao, L. Chen, H. Zhang, Y. Beckers, and N. Everaert. "Effects of Xylo-Oligosaccharides on Growth and Gut Microbiota as Potential Replacements for Antibiotic in Weaning Piglets." Frontiers in Microbiology, 12 (2021): 641172. doi:10.3389/fmicb.2021.641172

A.-C. Dalcq, T. Dogot, Y. Beckers, Y. Brostaux, E. Froidmont, F. Vanwindekens, and H. Soyeurt. "The Walloon farmers position differently their ideal dairy production system between a global-based intensive and a local-based extensive model of farm." PLoS ONE (2020). doi:10.1371/journal.pone.0223346

P. Dumortier, L. Gourlez de la Motte, A. L. H. Andriamandroso, M. Aubinet, Y. Beckers, J. Bindelle, N. De Cock, F. Lebeau, and B. Heinesch. "Beef cattle methane emission estimation using the eddy covariance technique in combination with geolocation." Agricultural and Forest Meteorology (2020). doi:10.1016/j.agrformet.2020.108249

S. Herremans, V. Decruyenaere, G. Cantalapiedra-Hijar, Y. Beckers, and E. Froidmont. "Effects of hydrolysable tannin-treated grass silage on milk yield and composition, nitrogen partitioning and nitrogen isotopic discrimination in lactating dairy cows." Animal, 00 (2020): 1-10. doi:10.1017/S175173111900226X

F. Huart, P. Malumba Kamba, F. Bera, and Y. Beckers. "The drying temperature and the moisture content at harvest affect the apparent metabolisable energy of two maize varieties in broiler chickens." British Poultry Science (2020): 1-11. doi:10.1080/00071668.2020.1784847

F. Huart, N. Peclers, F. Bera, Y. Beckers, and P. Malumba Kamba. "The effect of hydrodynamic conditions on the monogastric-like in vitro digestion of maize flours dried at different temperatures." LWT, 120 (2020). doi:10.1016/j.lwt.2019.108917

K. Abid, J. Jabri, Y. Beckers, H. Yaich, A. Malek, J. Rekhis, and M. Kamoun. "Influence of adding fibrolytic enzymes on the ruminal fermentation of date palm by-products." Archiv für Tierzucht, 62 (21 January 2019): 1-8. doi:10.5194/aab-62-1-2019

K. Abid, J. Jabri, Y. Beckers, H. Yaich, A. Malek, J. Rekhis, and J. Kamoun. "Effects of exogenous fibrolytic enzymes on the ruminal fermentation of agro-industrial by-products." South African Journal of Animal Sciences, 49, no. 4 (2019): 612-618. doi:10.4314/sajas.v49i4.2

H. Amamou, Y. Beckers, M. Mahouachi, and H. Hammami. "Thermotolerance indicators related to production and physiological responses to heat stress of holstein cows." Journal of Thermal Biology, 82 (2019): 90-98. doi:10.1016/j.jtherbio.2019.03.016

L. Gourlez de la Motte, P. Dumortier, Y. Beckers, B. Bodson, B. Heinesch, and M. Aubinet. "Herd position habits can bias net CO2 ecosystem exchange estimates in free range grazed pastures." Agricultural and Forest Meteorology, 268 (2019). doi:10.1016/j.agrformet.2019.01.015

S. Herremans, V. Decruyenaere, Y. Beckers, and E. Froidmont. "Silage additives to reduce protein degradation during ensiling and evaluation of in vitro ruminal nitrogen degradability." Grass and Forage Science (2019). doi:10.1111/gfs.12396

S. Herremans, V. Decruyenaere, Y. Beckers, and E. Froidmont. "Oak or chestnut tannin dose responses on silage pH, proteolysis and in vitro digestibility in laboratory-scale silos." Biotechnologie, Agronomie, Société et Environnement, 23, no. 2 (2019): 59-62. doi:10.25518/1780-4507.17914

G. Kalala Bolokango, B. Kambashi, B. Taminiau, M. Schroyen, N. Everaert, Y. Beckers, A. Richel et al. "In vitro approach to evaluate the fermentation pattern of inulin-rich food in obese individuals." The British journal of nutrition (2019): 1-19. doi:10.1017/S0007114519002915

B. Li, M. Schroyen, J. Leblois, Y. Beckers, J. Bindelle, and N. Everaert. "The use of inulin and wheat bran only during the starter period or during the entire rearing life of broilers: effects on growth performance, small intestinal maturation, and cecal microbial colonization until slaughter age." Poultry Science (2019). doi:10.3382/ps/pez088

R. Zhang, W. Zhang, Y. Bi, Y. Tu, Y. Beckers, H. Du, and Q. Diao. "Early feeding regime of waste milk, milk, and milk replacer for calves has different effects on rumen fermentation and the bacterial community." Animals, 9, no. 7 (2019): 443. doi:10.3390/ani9070443

L. Gourlez de la Motte, O. Mamadou, Y. Beckers, B. Bodson, B. Heinesch, and M. Aubinet. "Rotational and continuous grazing does not affect the total net ecosystem exchange of a pasture grazed by cattle but modifies CO2 exchange dynamics." Agriculture, Ecosystems and Environment, 253 (November 2018). doi:10.1016/j.agee.2017.11.011

F. Huart, P. Malumba Kamba, D. P. S. Odjo, W. Al-Izzi, F. Bera, and Y. Beckers. "In vitro and in vivo assessment of the effect of initial moisture content and drying temperature on the feeding value of maize grain." British Poultry Science (2018). doi:10.1080/00071668.2018.1477253

H. Amamou, M. B. Sassi, H. Aouadi, H. Khemiri, M. Mahouachi, Y. Beckers, and H. Hammami. "Climate change-related risks and adaptation strategies as perceived in dairy cattle farming systems in Tunisia." Climate Risk Management, 20 (2018): 38-49. doi:10.1016/j.crm.2018.03.004

Y. Blaise, A. Andriamandroso, Y. Beckers, B. Heinesch, E. Castro Muñoz, H. Soyeurt, E. Froidmont, F. Lebeau, and J. Bindelle. "The time after feeding alters methane emission kinet- ics in Holstein dry cows fed with various restricted diets." Livestock Science, 217 (2018): 99-107. doi:10.1016/j.livsci.2018.07.004

D. Jin, S. Zhao, N. Zheng, Y. Beckers, and J. Wang. "Urea metabolism and regulation by rumen bacterial urease in ruminants - A review." Annals of Animal Science (2018). doi:10.1515/aoas-2017-0028

D. Jin, S. Zhao, N. Zheng, D. Bu, Y. Beckers, and J. Wang. "Urea nitrogen induces changes in rumen microbial and host metabolic profiles in dairy cows." Livestock Science, 210 (2018): 104-110. doi:10.1016/j.livsci.2018.02.011

G. Kalala Bolokango, B. Kambashi Mutiaka, N. Everaert, Y. Beckers, A. Richel, B. Pachikian, A. Neyrinck, N. Delzenne, and J. Bindelle. "Characterization of fructans and dietary fibre profiles in raw and steamed vegetables." International Journal of Food Sciences and Nutrition, 69 (2018): 682–689. doi:10.1080/09637486.2017.1412404

B. Li, J. Leblois, B. Taminiau, M. Schroyen, Y. Beckers, J. Bindelle, and N. Everaert. "The effect of inulin and wheat bran on intestinal health and microbiota in the early life of broiler chickens." Poultry Science (2018). doi:10.3382/ps/pey195

D. P. S. Odjo, F. Bera, Y. Beckers, G. Foucart, and P. Malumba Kamba. "Influence of variety, harvesting date and drying temperature on the composition and the in vitro digestibility of corn grain." Journal of Cereal Science, 79 (2018): 218-225. doi:10.1016/j.jcs.2017.10.008

C. Poelaert, F. Francis, T. Alabi, R. Caparros Megido, B. Crahay, J. Bindelle, and Y. Beckers. "Protein value of two insects, subjected to various heat treatments, using growing rats and the protein digestibility-corrected amino acid score." Journal of Insects as Food and Feed, 4, no. 2 (2018): 77-87. doi:10.3920/JIFF2017.0003

U. P. Tougan, I. A. Youssao, E. L. Yayi, M. T. Kpodekon, S. Heuskin, Y. Beckers, G. A. Mensah, B. G. Koutinhouin, G. Lognay, and A. Thewis. "Fatty Acids Composition of Meat of Five Native Chicken (Gallus gallus) - Ecotypes of Benin Reared under Organic or Conventional system." Journal of Experimental Food Chemistry, 4, no. 2 (2018): 14. doi:10.4172/2472-0542.1000137

S. Vandermeulen, C. Ramirez Restrepo, Y. Beckers, H. Claessens, and J. Bindelle. "Agroforestry for ruminants: a review of trees and shrubs as fodder in silvopastoral temperate and tropical production systems." Animal Production Science, 58 (2018): 767-777. doi:10.1071/AN16434

S. Vandermeulen, C. A. Ramírez-Restrepo, C. Marche, V. Decruyenaere, Y. Beckers, and J. Bindelle. "Behaviour and browse species selectivity of heifers grazing in a temperate silvopastoral system." Agroforestry Systems, 92 (2018): 705-716. doi:10.1007/s10457-016-0041-x

A.-C. Dalcq, Y. Beckers, P. Mayeres, E. Reding, B. Wyzen, F. Colinet, P. Delhez, and H. Soyeurt. "The feeding system impacts relationships between calving interval and economic results of dairy farms." Animal (2017): 1-10. doi:10.1017/S1751731117003020

A. Andriamandroso, F. Lebeau, Y. Beckers, E. Froidmont, I. Dufrasne, B. Heinesch, P. Dumortier, G. Blanchy, Y. Blaise, and J. Bindelle. "Development of an open-source algorithm based on inertial measurement units (IMU) of a smartphone to detect cattle grass intake and ruminating behaviors." Computers and Electronics in Agriculture, 139 (2017): 126-137. doi:10.1016/j.compag.2017.05.020

P. Dumortier, M. Aubinet, Y. Beckers, H. Chopin, A. Debacq, L. Gourlez de la Motte, E. Jerome, F. Wilmus, and B. Heinesch. "Methane balance of an intensively grazed pasture and estimation of the enteric methane emissions from cattle." Agricultural and Forest Meteorology, 232 (January 2017): 527–535. doi:10.1016/j.agrformet.2016.09.010

D. Jin, S. Zhao, N. Zheng, D. Bu, Y. Beckers, S. E. Denman, C. S. McSweeney, and J. Wang. "Differences in ureolytic bacterial composition between the rumen digesta and rumen wall based on ureC gene classification." Frontiers in Microbiology, 8, MAR (2017). doi:10.3389/fmicb.2017.00385

X. Pan, F. Xue, X. Nan, Z. Tang, K. Wang, Y. Beckers, L. Jiang, and B. Xiong. "Illumina sequencing approach to characterize thiamine metabolism related bacteria and the impacts of thiamine supplementation on ruminal microbiota in dairy cows fed high-grain diets." Frontiers in Microbiology, 8, SEP (2017). doi:10.3389/fmicb.2017.01818

X. H. Pan, L. Yang, Y. Beckers, F. G. Xue, Z. W. Tang, L. S. Jiang, and B. H. Xiong. "Thiamine supplementation facilitates thiamine transporter expression in the rumen epithelium and attenuates high-grain-induced inflammation in low-yielding dairy cows." Journal of Dairy Science, 100, no. 7 (2017): 5329-5342. doi:10.3168/jds.2016-11966

C. POELAERT, X. Despret, M. Sindic, Y. Beckers, F. Francis, D. Portetelle, H. Soyeurt, A. Thewis, and J. Bindelle. "Cooking Has Variable Effects on the Fermentability in the Large Intestine of the Fraction of Meats, Grain Legumes, and Insects That Is Resistant to Digestion in the Small Intestine in an in Vitro Model of the Pig’s Gastrointestinal Tract." Journal of Agricultural and Food Chemistry, 65 (2017): 435-444. doi:10.1021/acs.jafc.6b04599

A. Torres-Pitarch, D. Hermans, E. G. Manzanilla, J. Bindelle, N. Everaert, Y. Beckers, D. Torrallardona, G. Bruggeman, G. E. Gardiner, and P. G. Lawlor. "Effect of feed enzymes on digestibility and growth in weaned pigs: A systematic review and meta-analysis." Animal Feed Science and Technology, 233 (2017): 145-159. doi:10.1016/j.anifeedsci.2017.04.024

L. Gourlez de la Motte, E. Jerome, O. Mamadou, B. Bodson, Y. Beckers, B. Heinesch, and M. Aubinet. "Carbon balance of an intensively grazed grassland in southern Belgium." Agricultural and Forest Meteorology, 228-229 (15 November 2016): 370-383. doi:10.1016/j.agrformet.2016.06.009

D. Jin, S. Zhao, P. Wang, N. Zheng, D. Bu, Y. Beckers, and J. Wang. "Insights into abundant rumen ureolytic bacterial community using rumen simulation system." Frontiers in Microbiology, 7, no. 1006 (2016). doi:10.3389/fmicb.2016.01006

X. Pan, L. Yang, F. G. Xue, H. R. Xin, L. S. Jiang, B. H. Xiong, and Y. Beckers. "Relationship between thiamine and subacute ruminal acidosis induced by a high-gran diet in dairy cows." Journal of Dairy Science, 99, no. 11 (2016): 8790-8801. doi:10.3168/jds.2016-10865

C. POELAERT, Y. Beckers, X. Despret, D. Portetelle, F. Francis, and J. Bindelle. "In vitro evaluation of fermentation characteristics of two types of insects as potential novel protein feeds for pigs." Journal of Animal Science, 94, 7S3 (2016): 198-201. doi:10.2527/jas.2015-9533

C. Marcq, D. Marlier, and Y. Beckers. "Improving adjuvant systems for polyclonal egg yolk antibody (IgY) production in laying hens in terms of productivity and animal welfare." Veterinary Immunology and Immunopathology, 165, no. 1-2 (May 2015): 54-63. doi:10.1016/j.vetimm.2015.02.012

P. Malumba Kamba, C. Boudry, O. Roiseux, J. Bindelle, Y. Beckers, and F. Bera. "Chemical characterisation and in vitro assessment of the nutritive value of co-products yield from the corn wet-milling process." Food Chemistry, 166 (2015): 143-149. doi:10.1016/j.foodchem.2014.06.001

D. P. S. Odjo, P. Malumba Kamba, Y. Beckers, and F. Bera. "Impact of drying and heat treatment on the feeding value of corn. A review." Biotechnologie, Agronomie, Société et Environnement, 19, no. 3 (2015): 301-312.

E. Jerome, Y. Beckers, B. Bodson, B. Heinesch, C. Moureaux, and M. Aubinet. "Impact of grazing on carbon dioxide exchanges in an intensively managed Belgian grassland." Agriculture, Ecosystems and Environment, 194 (2014): 7-16. doi:10.1016/j.agee.2014.04.021

M. Kamoun, H. Ammar, A. Thewis, Y. Beckers, J. France, and S. López. "Comparison of three 15N methods to correct for microbial contamination when assessing in situ protein degradability of fresh forages." Journal of Animal Science, 92, no. 11 (2014): 5053-5062. doi:10.2527/jas.2014-7691

P. Malumba Kamba, D. P. S. Odjo, C. Boudry, S. Danthine, J. Bindelle, Y. Beckers, and F. Bera. "Physicochemical characterization and in vitro assessment of the nutritive value of starch yield from corn dried at different temperatures." Stärke, 66 (2014): 738-748. doi:10.1002/star.201400012

H. Zitouni, R. Arhab, C. Boudry, H. Bousseboua, and Y. Beckers. "Chemical and biological evaluation of the nutritive value of Algerian green seaweed Ulva lactuca using in vitro gas production technique fior ruminant animals." International Journal of Advanced Research, 2, no. 4 (2014): 916-925.

P. Houndonougbo, S. HOUAGNI, F. HOUNDONOUGBO, C. CHRYSOSTOME, Y. Beckers, J. Bindelle, and N. Gengler. "EFFET DE LA PROVENANCE ET DE LA PROPORTION DES ACIDES AMINÉS (LYSINE ET MÉTHIONINE) SUR LES PERFORMANCES ZOOÉCONOMIQUES DE LA PINTADE LOCALE GRISE (NUMIDA MELEAGRIS) ÉLEVÉE AU BÉNIN." Journal de la Recherche Scientifique Universitaire de Lomé (Togo), 15, no. 2 (25 July 2013): 113-123.

Y. Beckers. "L'équilibre des rations alimentaires des bovins: Quelques pistes pour améliorer l'efficience azotée ?." Biotechnologie, Agronomie, Société et Environnement, 17, SPL1 (2013): 243-250.

A. Galis, C. Marcq, D. Marlier, D. Portetelle, I. Van, Y. Beckers, and A. Thewis. "Control of Salmonella contamination of shell eggs – preharvest and postharvest methods: a review." Comprehensive Reviews in Food Science and Food Safety, 12 (2013): 155-182. doi:10.1111/1541-4337.12007

E. Jerome, Y. Beckers, B. Bodson, C. Degard, C. Moureaux, and M. Aubinet. "Stockage de carbone et flux de gaz à effet de serre en prairie (synthèse bibliographique)." Biotechnologie, Agronomie, Société et Environnement, 17, no. 1 (2013): 103-117.

C. Marcq, A. Thewis, D. Portetelle, and Y. Beckers. "Refinement of the production of antigen-specific hen egg yolk antibodies (IgY) intended for passive dietary immunization in animals: A review." Biotechnologie, Agronomie, Société et Environnement, 17, no. 3 (2013): 483-493.

J.-Y. Zimmer, C. Saegerman, B. Losson, Y. Beckers, E. Haubruge, and F. Francis. "Chemical composition of silage residues sustaining the larval development of the Culicoides obsoletus/Culicoides scoticus species (Diptera: Ceratopogonidae)." Veterinary Parasitology, 191, no. 1-2 (2013): 197-201. doi:10.1016/j.vetpar.2012.08.014

Y. Abou, A. Adite, M. Ibikounle, Y. Beckers, F. Emile, and J.-C. Micha. "Partial replacement of fish meal with Azola meal in diets for Nile tilapia (Oreochromis niloticus L.) affects growth and whole body fatty acid composition." International Journal of Biological and Chemical Sciences, 5, no. 6 (2011): 2224-2235.

Y. Abou, E. D. Fiogbé, Y. Beckers, and J.-C. Micha. "Approximate compositional values and tissue fatty acid profiles of Nile Tilapia (Oreachromis niloticus L.) fed azolla-diets in earthen ponds." Food and Nutrition Sciences, 2 (2011): 964-973.

C. Marcq, E. Cox, I. M. Szalo, A. Thewis, and Y. Beckers. "Salmonella Typhimurium oral challenge model in mature broilers: Bacteriological, immunological, and growth performance aspects." Poultry Science, 90, no. 1 (2011): 59-67. doi:10.3382/ps.2010-01017

S. Vandeplas, R. Dubois Dauphin, Y. Beckers, P. Thonart, and A. Thewis. "Salmonella in chicken : Current and developing strategies to reduce contamination at farm level." Journal of Food Protection, 73, no. 4 (April 2010): 774-785. doi:10.4315/0362-028X-73.4.774

C. Boudry, J.-P. Dehoux, F. Colinet, J. Wavreille, D. Portetelle, Y. Beckers, and A. Thewis. "Effect of bovine colostrum on the serum insulin-like growth factor-I (IGF-I), the IGF binding proteins-2 and -3 and the thyroid hormones in weaning piglets." Archiv für Tierzucht, 53, no. 6 (2010): 675-688.

S. Vandeplas, R. Dubois Dauphin, R. Palm, Y. Beckers, P. Thonart, and A. Thewis. "Prevalence and sources of Campylobacter spp. contamination in free-range broiler production in the southern part of Belgium." Biotechnologie, Agronomie, Société et Environnement, 14, no. 2 (2010): 279-288.

S. Vandeplas, R. Dubois Dauphin, P. Thonart, A. Thewis, and Y. Beckers. "Effect of the bacterial or fungal origin of exogenous xylanases supplemented to a wheat-based diet on performance of broiler chickens and nutrient digestibility of the diet." Canadian Journal of Animal Science, 90, no. 2 (2010): 221-228. doi:10.4141/CJAS09067

S. Vandeplas, R. Dubois Dauphin, C. Thiry, Y. Beckers, G. W. Welling, P. Thonart, and A. Thewis. "Efficiency of a Lactobacillus plantarum-xylanase combination on growth performances, microflora populations, and nutrient digestibilities of broilers infected with Salmonella Typhimurium." Poultry Science, 88, no. 8 (August 2009): 1643-1654. doi:10.3382/ps.2008-00479

R. Chalghoumi, Y. Beckers, D. Portetelle, and A. Thewis. "Hen egg yolk antibodies (IgY), production and use for passive immunization against bacterial enteric infections in chicken : a review." Biotechnologie, Agronomie, Société et Environnement, 13, no. 3 (2009): 295-308.

R. Chalghoumi, C. Marcq, A. Thewis, D. Portetelle, and Y. Beckers. "Effects of feed supplementation with specific hen egg yolk antibody (immunoglobin Y) on Salmonella species cecal colonization and growth performances of challenged broiler chickens." Poultry Science, 88, no. 10 (2009): 2081-2092. doi:10.3382/ps.2009-00173

R. Chalghoumi, A. Thewis, Y. Beckers, C. Marcq, D. Portetelle, and Y.-J. Schneider. "Adhesion and growth inhibitory effect of chicken egg yolk antibody (IgY) on Salmonella enterica serovars Enteritidis and Typhimurium in vitro." Foodborne Pathogens and Disease, 6, no. 5 (2009): 593-604. doi:10.1089/fpd.2008.0258

R. Chalghoumi, A. Thewis, D. Portetelle, and Y. Beckers. "Production Of Hen Egg Yolk Immunoglobulins Simultaneously Directed Against Salmonella Enteritidis And Salmonella Typhimurium In The Same Egg Yolk." Poultry Science, 87, no. 1 (2008): 32-40. doi:10.3382/ps.2007-00252

E. Froidmont, M. Bonnet, R. Oger, V. Decruyenaere, J. Romnee, Y. Beckers, and N. Bartiaux-Thill. "Influence Of The Grinding Level And Extrusion On The Nutritional Value Of Lupin Seed (Lupinus Albus) For Cattle In The Context Of The Dutch Protein Evaluation System." Animal Feed Science and Technology, 142, no. 1-2 (2008): 59-73. doi:10.1016/j.anifeedsci.2007.07.002

D. Valkeners, A. Thewis, M. Van Laere, and Y. Beckers. "Effect Of Rumen-Degradable Protein Balance Deficit On Voluntary Intake, Microbial Protein Synthesis, And Nitrogen Metabolism In Growing Double-Muscled Belgian Blue Bulls Fed Corn Silage-Based Diet." Journal of Animal Science, 86, no. 3 (2008): 680-690. doi:10.2527/jas.2007-0258

S. Vandeplas, C. Marcq, R. Dubois Dauphin, Y. Beckers, P. Thonart, and A. Thewis. "Contamination of poultry flocks by the human pathogen Campylobacter spp. and strategies to reduce its prevalence at the farm level." Biotechnologie, Agronomie, Société et Environnement, 12, no. 3 (2008): 317-334.

M. Kamoun, S. Lopez, Y. Beckers, P. Lecomte, E. Francois, and A. Thewis. "Effect Of Feed N-15 Incorporation Into Solid-Associated Bacteria On The In Situ Nitrogen Degradability Of N-15 Labelled Italian Ryegrass." Animal Feed Science and Technology, 135, no. 3-4 (2007): 353-361. doi:10.1016/j.anifeedsci.2006.08.012

D. Valkeners, A. Thewis, S. Amant, and Y. Beckers. "Effect Of Various Levels Of Imbalance Between Energy And Nitrogen Release In The Rumen On Microbial Protein Synthesis And Nitrogen Metabolism In Growing Double-Muscled Belgian Blue Bulls Fed A Corn Silage-Based Diet." Journal of Animal Science, 84, no. 4 (2006): 877-885. doi:10.2527/2006.844877x

E. Froidmont, B. Wathelet, Y. Beckers, J. M. Romnee, F. Dehareng, J. Wavreille, O. Schoeling, V. Decauwert, and N. Bartiaux-Thill. "Improvement of lupin seed valorisation by the pig with the addition of alpha-galactosidase in the feed and the choice of a suited variety." Biotechnologie, Agronomie, Société et Environnement, 9, no. 4 (2005): 225-235.

D. Valkeners, A. Thewis, F. Piron, and Y. Beckers. "Effect Of Imbalance Between Energy And Nitrogen Supplies On Microbial Protein Synthesis And Nitrogen Metabolism In Growing Double-Muscled Belgian Blue Bulls." Journal of Animal Science, 82, no. 6 (2004): 1818-1825. doi:10.2527/2004.8261818x

M. Mahouachi, L. Haddad, C. Kayouli, A. Thewis, and Y. Beckers. "Effects Of The Nature Of Nitrogen Supplementation On Voluntary Intake, Rumen Parameters And Ruminal Degradation Of Dry Matter In Sheep Fed Oat Silage-Based Diets." Small Ruminant Research, 48, no. 3 (2003): 181-187. doi:10.1016/S0921-4488(02)00292-4

E. Froidmont, Y. Beckers, and A. Thewis. "Determination Of The Methionine Requirement Of Finishing Double-Muscled Belgian Blue Bulls With A Three-Step Method." Canadian Journal of Animal Science, 82, no. 1 (2002): 95-102. doi:10.4141/A00-103

E. Froidmont, P. Rondia, A. Thewis, and Y. Beckers. "Rumen Escape Of Methionine And Lysine Administered Intraruminally To Growing Double-Muscled Belgian Blue Bulls." Reproduction Nutrition Development, 42, no. 6 (2002): 537-544. doi:10.1051/rnd:2002039

E. Froidmont, Y. Beckers, and A. Thewis. "Determination Of The Methionine Requirement Of Growing Double-Muscled Belgian Blue Bulls With A Three-Step Method." Journal of Animal Science, 78, no. 1 (2000): 233-241. doi:10.2527/2000.781233x

N. Moujahed, C. Kayouli, A. Thewis, Y. Beckers, and S. Rezgui. "Effects Of Multinutrient Blocks And Polyethylene Glycol 4000 Supplies On Intake And Digestion By Sheep Fed Acacia Cyanophylla Lindl. Foliage-Based Diets." Animal Feed Science and Technology, 88, no. 3-4 (2000): 219-238. doi:10.1016/S0377-8401(00)00211-X

M. Doreau, E. Ferchal, and Y. Beckers. "Effects of level of intake and of available volatile fatty acids on the absorptive capacity of sheep rumen." Small Ruminant Research, 25 (1997): 99-105. doi:10.1016/s0921-4488(96)00982-0

Y. Beckers, A. Thewis, and B. Maudoux. "Intestinal Digestibility Of Rumen Undegraded N Of Concentrates Measured By The Mobile Nylon Bag Technique." Animal Feed Science and Technology, 61, no. 1-4 (1996): 305-323. doi:10.1016/0377-8401(95)00945-0

Y. Beckers, A. Thewis, B. Maudoux, and E. Francois. "Studies On The In-Situ Nitrogen Degradability Corrected For Bacterial-Contamination Of Concentrate Feeds In Steers." Journal of Animal Science, 73, no. 1 (1995): 220-227. doi:10.2527/1995.731220x

P. Lecomte, S. Chabi, Y. Beckers, M. Kamoun, and A. Thewis. "Influence de l'âge des repousses sur la dégradabilité de l'azote d'une végétation naturelle de savane en région de climat tropical humide après correction de la contamination azotée bactérienne." Annales de Zootechnie, 44 (1995): 61.

P. Leterme, Y. Beckers, and A. Thewis. "Trypsin-Inhibitors In Peas - Varietal Effect And Influence On Digestibility Of Crude Protein By Growing Pigs." Animal Feed Science and Technology, 29, no. 1 (1990): 45-55. doi:10.1016/0377-8401(90)90092-M

P. Leterme, A. Thewis, Y. Beckers, and E. Baudart. "Apparent And True Ileal Digestibility Of Amino-Acids And Nitrogen-Balance Measured In Pigs With Ileorectal Anastomosis Or T-Cannulas, Given A Diet Containing Peas." Journal of the Science of Food and Agriculture, 52, no. 4 (1990): 485-497. doi:10.1002/jsfa.2740520407

P. Leterme, F. Cors, Y. Beckers, and A. Thewis. "Composition chimique et valeur alimentaire du pois protéagineux chez le porc en croissance." Landbouwtijdschrift, 42, no. 4 (July 1989): 683-693.

P. Leterme and Y. Beckers. "Utilisation du pois protéagineux dans l’alimentation des porcs. Revue bibliographique. 2. Valeur alimentaire et performances zootechniques." Revue de l'Agriculture, 42 (1989): 481-492.

P. Leterme and Y. Beckers. "Utilisation du pois protéagineux dans l’alimentation des porcs. Revue bibliographique. 1. Composition chimique et répercussions nutritionnelles." Revue de l'Agriculture, 42 (1989): 469-480.

Scientific conferences in universities or research centers

M. Fontin, Y. Beckers, A. Bien-Aimé, and D. Marlier. "Amélioration de la valeur nutritive des feuilles de bananier plantain chez les caprins par le traitement à l’urée et par des compléments azotés." Paper presented at Débat autour de la Recherche à l’Université d’État d’Haïti, Pétion-Ville, Haiti, 23 May 2022.

M. Fontin, Y. Beckers, Bien-Aimé Audalbert, and D. Marlier. "Young plantain leaves in weaned rabbit diet: growth performance, digestibility, carcass yield and composition." Paper presented at 5th Cogress on Agroforestry: Transitioning to a Viable World, 2022.

Y. Beckers. "Changements climatiques : les causes et les moyens d’atténuation." Paper presented at Productions animales - réchauffement climatique, Le Kef, Tunisia, 03 May 2017.

L. Gourlez de la Motte, Y. Beckers, B. Bodson, B. Heinesch, and M. Aubinet. "Rotational and continuous grazing does not affect the total net ecosystem exchange of a pasture grazed by cattle but modifies CO2 exchange dynamics." Paper presented at ICOS belgium first science conference, Gembloux, Belgium, 2017.

Y. Beckers. "Changements climatiques : les impacts des ruminants et quels leviers d'action." Paper presented at Conférence en nutrition animale - cycle de formation ingénieur, Le Kef, Tunisia, 02 May 2016.

Y. Beckers. "Les ruminants sont des émetteurs importants de gaz à effet de serre : que faire pour les atténuer ?." Paper presented at Conférence à l'Ecole supérieure d'agriculture du Kef, Le Kef, Tunisia, 10 April 2013.

Y. Beckers. "Valorisation de l'épeautre dans l'alimentation des bovins." Paper presented at Journée de formation sur l'épeautre, Segré, France, 19 March 2013.

P. Dumortier, F. Rabier, Y. Beckers, A. Vanlierde, E. Jerome, and M. Mathot. "Elevage et gaz à effet de serre : le bilan des émissions de l'animal à la filière." Paper presented at Carrefour des Productions animales, Gembloux, Belgium, 20 February 2013.

Y. Beckers and C. Marcq. "L'immunisaton passive, un autre moyen de moduler la flore du tube digestif des animaux : l'exemple des salmonelles chez le poulet de chair." Paper presented at Conférence en production animale, Tunis, Tunisia, 26 April 2012.

Y. Beckers. "La féverole en alimentation animale." Paper presented at Conférence en production animale, Le Kef, Tunisia, 05 May 2011.

Y. Beckers. "Alimentation et définitions des rations dans les exploitations laitières." Paper presented at Projet Dairyman : Journée d'informations - Plan de développement des exploitations, Gembloux, Belgium, 02 February 2011.

Y. Beckers and C. Marcq. "L'immunisation passive, un autre moyen de moduler la flore du tube digestif des animaux : l'exemple des salmonelles chez le poulet de chair." Paper presented at Symposium en l'honneur de Ewald Teller, Louvain-La-Neuve, Belgium, 03 May 2010.

Y. Beckers. "Mesure de l'ingestion des fourrages chez le ruminant." Paper presented at Conférence en production animale, Le Kef, Tunisia, 14 April 2010.

Y. Beckers. "Alimentation azotée du ruminant." Paper presented at Conférence en production animale, Tunis, Tunisia, 10 April 2009.

Y. Beckers. "Filière végétale, filière animale : un partenariat gagnant." Paper presented at Table ronde des 40 ans du Livre Blanc, Gembloux, Belgium, 23 May 2007.

F. Piron, C. Collin, B. Bodson, A. Thewis, and Y. Beckers. "Effets de la dureté des grains et du mode de présentation du froment sur la digestion de l'amidon chez le poulet de chair." Paper presented at Livre Blanc Céréales - Fumure et protection des céréales, Gembloux, Belgium, 28 February 2007.

Y. Beckers. "Alimentation azotée du taurillon Blanc-Bleu Belge culard : état des connaissances, nouvelles avancées et perspectives." Paper presented at Réunion du consortium international "Interactions Environnement - Elevage", Rabat - Ecole Nationale Forestière d'Ingénieurs, Morocco, 11 December 2006.

F. Piron, Y. Beckers, K. Ounissi, B. Bodson, C. Massaux, J. Lenartz, and A. Thewis. "Valorisation du froment d'hiver dans l'alimentation du poulet de chair: influence de la variété et de l'année de culture." Paper presented at Livre Blanc Céréales - Fumure et protection des céréales, Gembloux, Belgium, 2006.

Y. Beckers. "Le culard Blanc Bleu Belge : aspects zootechniques." Paper presented at Séminaire international fermé : Le modèle Blanc Bleu Belge questionné, Gembloux, Belgium, 28 June 2005.

Y. Beckers, F. Piron, F. Wéry, S. Vandeplas, and A. Thewis. "Des enzymes exogènes pour valoriser davantage le froment chez les volailles et les porcs." Paper presented at 10ème Carrefour des Productions Animales, Gembloux, Belgium, 2005.

Y. Beckers. "Les tourteaux de lin : intérêts et limites en alimentation bovine." Paper presented at Séminaire : les tourteaux de lin en alimentation animale, Chaulais, France, 20 March 2003.

Y. Beckers, J.-P. Destain, V. Decruyenaere, L. Fabry, P. Lecomte, P. Limbourg, D. Stilmant, and C. Tollet. "Amélioration de l'efficacité de l'azote dan sla production fourragère et sa valorisation par les ruminants." Paper presented at Journée d'étude : Efficience de l'azote en production végétale et animale, Gembloux, Belgium, 05 November 1997.

M. Mahouachi, Y. Beckers, and A. Thewis. "Estimation de la synthèse des protéines microbiennes à partir du flux duodénal des bases nucléiques ou l'excrétion urinaire de leurs dérivés." Paper presented at 2èmes Journées Nationales sur les Acquis de la Recherche Agronomique et Vétérinaire, Hammamet, Tunisia, December 1995.

Y. Beckers and A. Thewis. "Utilisation des marqueurs fécaux et urinaires dans les études de digestibilité chez le ruminant." Paper presented at Conférence à l'Institut National Agronomique de Tunis, 21 October 1995.

Y. Beckers and A. Thewis. "Valeur protéique des aliments chez le ruminants : comparaison des systèmes DVE et PDI." Paper presented at Module de formation : "L'alimentation animale aujourd'hui et demain", Louvain-La-Neuve, Belgium, March 1995.

Scientific congresses and symposiums

Published communications

C. Colaux, Y. Beckers, Y. Brostaux, C. Charles, H. Claessens, B. Heinesch, M. Sindic, and A. Degré. "Soft Skills: how to make the young engineers aware of their new talents?." In Creating the holistic engineerby J. Stanzione and M. Savelski, 159-166. 2018.

Y. Blaise, A. Andriamandroso, B. Heinesch, Y. Beckers, E. Castro Muñoz, F. Lebeau, and J. Bindelle. "Influences of feeding behaviour and forage quality on diurnal methane emission dynamics of grazing cows." In Precision Livestock Farming ‘17by D. Berckmans and K. Keita, 759-769. 2017.

Y. Blaise, F. Lebeau, A. Andriamandroso, Y. Beckers, B. Heinesch, and J. Bindelle. "LINKING CATTLE GRAZING BEHAVIOR TO METHANE AND CARBON DIOXIDE DYNAMICS." Communications in Agricultural and Applied Biological Sciences, 81, no. 1 (February 2016): 107-112.

Y. Blaise, F. Lebeau, A. Andriamandroso, Y. Beckers, B. Heinesch, and J. Bindelle. "High rate monitoring CH4 production dynamics and their link with behavioral phases in cattle." In EAAP – 67 th Annual Meeting, Belfast 2016. 2016.

C. POELAERT, Y. Beckers, X. Despret, D. Portetelle, F. Francis, and J. Bindelle. "In vitro evaluation of fermentation characteristics of two types of insects, as potential novel protein feeds for pigs." In 13th International Symposium on Digestive Physiology of Pigs. 2015.

Y. Beckers, F. Vanwindekens, B. Wyzen, and T. Dogot. "Les premiers enseignements de l'enquête auprès des élevages laitiers sur leurs évolutions technico-économiques." In Carrefour des Productions animales, 20ème édition "L'exploitation laitière wallonne de demain : du point de vue des acteurs aux propositions de la reccherche", 23 - 40. Gembloux, Belgium: CRA-W, 2015.

H. Soyeurt, A. Vanlierde, M.-L. Vanrobays, P. Kandel, E. Froidmont, F. Dehareng, Y. Beckers, P. Dardenne, and N. Gengler. "Using milk spectral data for large-scale phenotypes linked to mitigation and efficiency." In Book of abstracts of the 65th annual meeting of the European Federation of Animal Science, 216. Copenhagen 2014. Wageningen, Netherlands: Wageningen Academic Publishers, 2014.

V. Decruyenaere, F. Lessire, Y. Beckers, P. Rondia, G. Martin, and E. Froidmont. "Les herbivores, transformateurs de produits fourragers et de coproduits issus de l'agro-industrie en aliments nobles pour l'homme." In La viande bovine remise en question: De sa production à sa consommationedited by CRA-W, 45-55. Gembloux, Belgium: CRA-W, 2014.

P. Dumortier, M. Aubinet, Y. Beckers, A. Debacq, E. Jerome, F. Wilmus, and B. Heinesch. "Yearly Follow-up of Methane Turbulent Exchange Over an Intensively Grazed Pasture in Belgium." Communications in Agricultural and Applied Biological Sciences, 79, no. 1 (2014): 91-96.

L. Hautier, M. Campion, M. Ninane, D. Knoden, P. Luxen, P. Burny, Y. Beckers, M. Dufrêne, and D. Stilmant. "L'élevage des ruminants, un élément clé de notre territoire." In 19ème Carrefour des Productions Animales "La viande bovine remise en question : de sa production à sa consommation", Gembloux, le 19 février 2014edited by Centre wallon de Recherches agronomiques, 30-44. Gembloux, Belgium: Centre wallon de Recherches agronomiques, Service Communication, 2014.

S. Vandermeulen, M. Pascal, C. Marche, A. Pilet, Y. Beckers, and J. Bindelle. "Hedges and woody strips browsing by cattle on pasture in Wallonia, Belgium." In Revitalising Grasslands to Sustain our Communities: Proceedings 22nd International Grassland Congress, Sydney 15-19 september 2013edited by D. L. Michalk, G. D. Millar, W. B. Badgery, and K. M. Broadfoot. Orange, Australia: New South Wales Departement of Primary Industry, 2013.

P. Dumortier, M. Aubinet, H. Chopin, A. Debacq, E. Jerome, Y. Beckers, and B. Heinesch. "Initiation of methane turbulent flux measurements over a grazed grassland in Belgium." Geophysical Research Abstracts, 15 (2013).

Y. Beckers, B. Bodson, F. Vancutsem, C. Cartrysse, E. Froidmont, and V. Decruyenaere. "Consommation locale de produits animaux : que produire localement avec nos propres ressources végétales ?." In 17ème Carrefour des productions animales. 2012.

E. Jerome, Y. Beckers, B. Bodson, C. Moureaux, and M. Aubinet. "Carbon balance of a grazed grassland in Belgium." In Communications in Agricultural and Applied Biological Sciences, 105-110. Ghent, Belgium: Faculty of Bioscience Engeneering, 2012.

C. Marcq, C. Cambier, A. Thewis, and Y. Beckers. "Usefulness of a Vancomycin pretreatment when challenging chickens in order to evaluate anti-Salmonella preparations." In 18th European Symposium on Poultry Nutrition: Proceedingsedited by N. Ceylan, I. Ciftci, and S. Adabi, 585-588. 2011.

P. Picron, A. Goubau, T. Lecomte, M. Romnée, J. Bindelle, V. Decruyenaere, Y. Beckers, and D. Stilmant. "Potential mineral deficiencies for Ndama cattle grazing Urochloa sp. based tropical pastures in the Bas-Congo province of the Democratic Republic of Congo." Advances in Animal Biosciences, 2, no. 2 (2011): 388.

C. Marcq, E. Cox, A. Thewis, D. Portetelle, and Y. Beckers. "Antibodies Dynamics in the Broiler Digestive Tract after Salmonella Typhimurium Oral Challenge." In XIIIth European Poultry Conference: Program & Book of Abstracts, World's Poultry Science Journal, Volume 66, Supplementedited by M. Duclos and Y. Nys, 156. Nouzilly, France: World Poultry Science Association, French Branch, 2010.

C. Marcq, A. Thewis, D. Portetelle, and Y. Beckers. "Immunisation passive du poulet de chair vis-à-vis des salmonelles à l'aide d'anticorps du jaune d'oeuf." In Impacts de l'alimentation sur la santé animale : nouveaux développements, 37-44. Gembloux, Belgium: CRA-W, Service Communication, 2009.

C. Marcq, D. Portetelle, R. Chalghoumi, A. Thewis, and Y. Beckers. "Potential of Dried Egg Yolk as a Source of Immunoglobulins to Control Salmonella in the Gastrointestinal Tract of the Broiler Chicken." In 17th European Symposium on Poultry Nutrition : Proceedings & Abstracts, 181. 2009.

Y. Beckers and F. Piron. "Utilisation des enzymes en alimentation porcine et avicole." In Impact de l'alimentation sur la santé animale : nouveaux développementsedited by CRA-W, 45-53. Gembloux, Belgium: CRA-W, 2009.

V. Decruyenaere, M. Bonnet, C. Poncelet, Y. Beckers, M. Sindic, and D. Stilmant. "Potentiel d'utilisation de régime à valeur OEB negative : essai croissance-finition de taurillons BBB." In Les filières aniales dans la tourmente : produire plus et mieux avec moins. 2009.

C. Marcq, R. Chalghoumi, Y. Beckers, D. Portetelle, and A. Thewis. "Développement d’une stratégie d’immunisation passive du poulet de chair vis-à-vis de Salmonella Enteritidis et Typhimurium à l’aide d’anticorps du jaune d’œuf." In 8èmes JRA : Synthèses et textes, 418-422. 2009.

F. Piron, D. Bruyer, A. Thewis, and Y. Beckers. "Wheat-based dried distillers’ grains are variable in chemical composition." In Recent Advances in Animal Nutrition 2008edited by P. C. Garnsworthy and J. Wiseman. Nottingham, United Kingdom: Nottingham University Press, 2009.

F. Piron, D. Bruyer, A. Thewis, and Y. Beckers. "Les coproduits européens issus du bioéthanol produit au départ de céréales ont une composition chimique variable." In journées de la recherche avicole, 244-248. Paris, France: INRA et ITAVI, 2009.

C. Marcq, V. Graide, Y. Beckers, D. Portetelle, and A. Thewis. "Survival of yolk’s immunoglobulins directed against Salmonella Enteritidis and Salmonella Typhimurium in the gastro-intestinal tract of the broiler chicken." In Proceedings of the Thirteenth Conference on Food Microbiology, 106-107. 2008.

E. Froidmont, M. Bonnet, Y. Beckers, and N. Bartiaux-Thill. "Optimalisation de la valeur nutritionnelle de la graine de lupin pour les bovins." In 12ème Carrefour des productions animales, "Le marché de la viande bovine : enjeux et perspectives"edited by CRA-W and FUSAGx. 2007.

P. Rondia, E. Froimont, V. Decruyenaere, Y. Beckers, and N. Bartiaux-Thill. "Formulation d'un additif alimentaire contenant les premiers acides aminés limitants chez le taurillon BBBc nourri avec de l'ensilage de maïs : quelle incidence sur ses performances zootechniques." In 12ème Carrefour des productions animales, "Le marché de la viande bovine : enjeux et perspectives"edited by CRA-W and FUSAG. 2007.

F. Piron, C. Collin, Y. Beckers, B. Bodson, and A. Thewis. "Effets de l’interaction entre la dureté des grains et le mode de présentation du blé sur la digestion de l’amidon chez le poulet de chair." In journées de la recherche avicole, 238-242. Paris, France: INRA et ITAVI, 2007.

F. Piron, M. Philippart de Foy, A. Thewis, and Y. Beckers. "Comparaison de quatre modalités de présentation du blé chez le poulet de chair." In journées de la recherche avicole, 243-247. Paris, France: INRA et ITAVI, 2007.

P. Stassart, N. Barthiaux-Thill, C. Lamine, J. Wavreille, Y. Beckers, and A. Thewis. "Bien être animal : alimenter le lien entre consommateurs, éleveurs et animaux." In Douzième Carrefour des Productions Animales, Gembloux, 9. Gembloux, Belgium: Faculté des sciences agronomiques de l'Etat, 2007.

E. Froidmont, M. Bonnet, Y. Beckers, and N. Bartiaux-Thill. "Influence du degré de mouture et de l'extrusion sur la valeur nutritionnelle de la graine de lupin." Rencontres autour des Recherches sur les Ruminants, 12 (2006): 98.

E. Froidmont, B. Wathelet, Y. Beckers, J. M. Romnee, F. Dehareng, J. Wavreille, O. Schoeling, V. Decauwert, and N. Bartiaux-Thill. "Using lupin seeds to replace soybean meal in pig feed: effect of alpha-galactosidase supplement and lupin variety on nitrogen retention and diet digestibility in pigs." In Mexico, where old and new world lupins meet. Proceedings of the 11thInternational Lupin Conference, Guadalajara, Jalisco, Mexico, 4-9 May2005, 180-190. 2006.

S. Vandeplas, R. Dubois Dauphin, Y. Beckers, P. Thonart, and A. Thewis. "Prevalence and sources of Campylobacter spp. contamination in free-range broiler production in Belgium." World's Poultry Science Journal, 62, supplément (2006): 557.

D. Valkeners, Y. Beckers, S. Amant, and A. Thewis. "Effect of various levels of imbalance between energy and nitrogen supplies in the rumen on nitrogen metabolism in growing double-muscled Belgian Blue bulls fed maize silage based diet." In Proceedings of the British Society of Animal Science annual conference2005, York, UK. 4th-6th April, 2005, 184. Penicuik, United Kingdom: British Society of Animal Science, 2005.

D. Valkeners, Y. Beckers, M. Van Laere, and A. Thewis. "Effect of ruminal degradable nitrogen deficit on nitrogen metabolism in growing double-muscled Belgian Blue bulls fed maize silage based diet." In Proceedings of the British Society of Animal Science annual conference2005, York, UK. 4th-6th April, 2005, 182. Penicuik, United Kingdom: British Society of Animal Science, 2005.

P. Rondia, F. Dehareng, Y. Beckers, V. Ninane, J. Laloux, and J. Wavreille. "Différenciation et fonctionnalité des produits agricoles." In 10ème Carrefour des Productions animales : L’élevage : hier, aujourd’hui, demain quelles attentes pour quels enjeux ?edited by CRA-W and FUSAGx, 60-64. 2005.

D. Valkeners, Y. Beckers, E. Froidmont, and A. Thewis. "Alimentation azotée du taurillon Blanc Bleu Belge culard: état des connaissances, nouvelles avancées et perspectives." In 10ème Carrefour des Productions animales. L’élevage : hier, aujourd’hui, demain quelles attentes pour quels enjeux ?edited by CRA-W and FUSGAx, 7-12. 2005.

J. Wavreille, P. Rondia, V. Decruyenaere, D. Jamar, D. Stilmant, N. Gengler, P. Mayeres, Y. Beckers, M. Sindic, and N. Bartiaux-Thill. "La diversification en productions animales." In 10ème Carrefour des Productions animales : L’élevage : hier, aujourd’hui, demain quelles attentes pour quels enjeux ?edited by CRA-W and FUSAGx, 53-57. 2005.

F. Piron, Y. Beckers, K. Ounissi, J. Lenartz, and A. Thewis. "Comparaison de quatre variétés de blé d’hiver : effets de différents critères physico-chimiques sur les performances zootechniques du poulet." In Journées de la Recherche Avicole, 277-282. Paris, France: INRA et ITAVI, 2005.

P. Rondia, E. Froidmont, V. Decrueyenaere, Y. Beckers, and N. Bartiaux-Thill. "Incidence d'una dditif alimentaire contenant les premiers acides aminés limitants sur les performances zootechniques du taurillon BBBc nourri avec de l'ensilage de maïs." Rencontres autour des Recherches sur les Ruminants, 12 (2005): 256.

E. Froidmont, Y. Beckers, F. Dehareng, A. Thewis, and N. Barthiaux-Thill. "Lupin seeds as a substitute to soybean in broiler chiken feeding : incorporation level and enzyme preparation effects on performances, digestibility and meat composition." In 55th Meeting of European Association of Animal Production, 138. 2004.

D. Valkeners, Y. Beckers, and A. Thewis. "Effect of various level of imbalance between energy ans nitrogen supplies on nitrogen metabolism in growing double-muscled Belgian Blue bulls." In Proceeding of the British Society of Animal Science - Annual meeting, 192. 2004.

X. Frand, E. Froidmont, Y. Beckers, and N. Bartiaux-Thill. "Détermination des acides aminés limitants chez le taurillon BBBc recevant une ration à base d'ensilage de maïs." Rencontres autour des Recherches sur les Ruminants, 10 (2003): 396.

D. Valkeners, Y. Beckers, F. Piron, and A. Thewis. "Effect of imbalance between energy and nitrogen supplies on microbial protein synthesis in growing double-muscled Belgian Blue bulls." In Proceeding of the British Society of Animal Science 2003, 123. United Kingdom: British Society of Animal Science, 2003.

E. Froidmont, P. Rondia, Y. Beckers, and A. Thewis. "Rumen bypass of free methionine and lysine for double-muscled Belgian Blue bull." Paper presented at Joint Nutrition Symposium, Antwerpen, Belgium, 2002.

D. Valkeners, F. Piron, A. Thewis, and Y. Beckers. "Désynchronisation d'amplitude élevée des apports azotés et énergétiques : paramètres de la digestion et du métabolisme azotés chez le taurillon Blanc Bleu Belge culard en croissance." In Neuvièmes Rencontres autour de la Recherche sur les Ruminants, 331. Paris, France: INRA-Institut de l'Elevage, 2002.

D. Valkeners, A. J. Wouters, A. Thewis, and Y. Beckers. "Désynchronisation des apports énergétiques et azotés et paramètres de la digestion et du métabolisme azoté chez le taurillon Blanc Bleu Belge culard." In 8èmes Rencontres autour de la Recherche sur les Ruminants, Paris, France, 5-6 décembre 2001, 306. 2001.

E. Froidmont, P. Rondia, Y. Beckers, and A. Thewis. "Mesure du by-pass ruminal d'un supplément de lysine et de méthionine libres chez le taurillon Blanc Bleu Belge culard." In 7èmes Rencontres autour de la Recherche sur les Ruminants, Paris, France, 6-7 décembre 2000, 201. 2000.

A. Ndimubandi, Y. Beckers, A. Thewis, and A. Buldgen. "Utilisation des fécès en remplacement du jus de rumen pour évaluer la fermentescibilité des aliments." In 7èmes Rencontres autour de la Recherche sur les Ruminants, Paris, France, 6-7 décembre 2000, 194. 2000.

E. Froidmont, Y. Beckers, and A. Thewis. "Determination of methionine requirement of growing double-muscled Belgian Blue bull." In Book of abstract of the VIIIth International Symposium on Protein Metabolism and Nutrition, 94. EAAP publication, 1999.

E. Froidmont, Y. Beckers, and A. Thewis. "Détermination du besoin en méthionine du taurillon Blanc Bleu Belge culard en finition." In 6èmes Rencontres autour de la Recherche sur les Ruminants, Paris, France, 1-2 décembre 1999, 164. 1999.

A. Ndimubandi, M. Fonck, A. Buldgen, Y. Beckers, and A. Thewis. "Effets de la nature de la ration et du moment de prélèvement du jus de rumen sur la fermentescibilité d'aliment fibreux en seringue." In 6èmes Rencontres autour de la Recherche sur les Ruminants, Paris, France, 1-2 décembre 1999, 108. 1999.

E. Froidmont, Y. Beckers, and A. Thewis. "Détermination du besoin en méthionine du taurilon Blanc Bleu Belge culard en croissance." In Rencontres Recherches Ruminants, 266. 1998.

A. Ndimubandi, A. Dieng, M. Fonck, A. Buldgen, Y. Beckers, and A. Thewis. "Etude comparative de la technique du gaz-test, de la digestibilité de la matière organique par la cellulase et de la composition chimique d'Andropogon gayanus pour la prédiction de sa valeur énergétique et de son ingestibilité chez le mouton Peul-Peul." In 5èmes Rencontres autour de la Recherche sur les Ruminants, Paris, France, 2-3 décembre 1998, 268. 1998.

E. Froidmont, Y. Beckers, and A. Thewis. "Influence de la perfusion duodénale de caséinate de sodium sur la rétention azotée chez le taurillon Blanc Bleu Belge culard en croissance et rationné en protéines." In 4èmes Rencontres autour de la Recherche sur les Ruminants, Paris, France, 4-5 décembre 1997, 147. 1997.

A. Ndimubandi, Y. Beckers, A. Laouali, A. Thewis, and A. Buldgen. "Estimation de la fermentescibilité de fourrages et sous-produits tropicaux au moyen du gaz test: étude de quelques facteurs méthodologiques." In 4èmes Rencontres autour de la Recherche sur les Ruminants, Paris, France, 4-5 décembre 1997, 119. 1997.

P. Lecomte, M. Boreux, R. Agneessens, Y. Beckers, and A. De Keyser. "Caractérisation de la composition chimique et de la valeur de l'épeautre (Triticum spelta) en alimentation des ruminants." In 3ème Renc. Rech. Ruminantsedited by INRA and Institut de l'Elevage. 1996.

Y. Beckers, A. Thewis, M. Mahouachi, C. Sohy, and A. Juprelle. "Utilisation d'un index urinaire pour quantifier la fourniture en protéines microbiennes digestibles dans l'intestin chez le taurillon en croissance." In 3èmes Rencontres autour de la Recherche sur les Ruminants, Paris, France, 4-5 décembre 1996, 115. 1996.

M. Kamoun, Y. Beckers, P. Lecomte, P. Dardenne, and A. Thewis. "Prévision de la dégradabilité in situ des matières azotées des fourrages par une méthode enzymatique." In 3èmes Rencontres autour de la Recherche sur les Ruminants, Paris, France, 4-5 décembre 1996, 123. 1996.

Y. Beckers, A. Thewis, C. Sohy, and E. François. "Measurements of microbial N flow to the duodenum and urinary excretion of purine derivatives in bulls." Annales de Zootechnie, 44 (1995): 177.

Y. Beckers and A. Thewis. "Excretion of purine derivatives in urine of Belgian Blue bulls following duodenal infusion of purines from Torula yeast." In Proceedings of the Society of Nutrition Physiologyedited by D. Giesecke, 235. 1994.

M. Kamoun, Y. Beckers, A. Thewis, E. François, and P. Lecomte. "Comparison of 15N labelled forages and 15N incorporation into microbe for microbial estimation in nylon bag residues : influence on the effective N degradability." In Proceedings of the Society of Nutrition Physiologyedited by D. Giesecke, 45. 1994.

P. Lecomte, M. Kamoun, R. Agneessens, Y. Beckers, P. Dardenne, A. Thewis, and E. François. "Approach to the use of Near Infrared Spectrometry for the estimation of microbial nitrogen contamination of forages during ruminal incubation in nylon bag." In Proceedings of the Society of Nutrition Physiologyedited by D. Giesecke, 44. 1994.

Y. Beckers, A. Thewis, and B. Maudoux. "Some factors influencing the intestinal digestibility of ruminal undegraded nitrogen estimated with the nylon bag procedure." Annales de Zootechnie, 43, no. 3 (1994): 251.

Y. Beckers, A. Thewis, B. Maudoux, and E. Francois. "The Use Of N-15 For The Determination Of In-Sacco Bacterial-Contamination Of 3 Concentrate Feeds And N-Degradability Of Feeds In The Rumen." Annales de Zootechnie (1993): 126-126. doi:10.1051/animres:19930209

Y. Beckers and A. Thewis. "Influence of increasing amounts of hydrolysed casein proteins infused into the duodenum: on its ileal digestibility in sheep." In Proceedings: the 6th international symposium on protein metabolism and nutrition. Vol.2edited by B. Eggum, S. Boisen, C. Borsting, A. Danfaer, and T. Hvelplund, 107-109. Denmark: EAAP publication, 1991.

P. Leterme, Y. Beckers, and A. Thewis. "Inter- and Intravarietal variability of the trypsin inhibitors content of peas and his influence on apparent digestibility of crude proteins by growing pigs." In Recent advances of research in antinutritional factors in legume seeds: animal nutrition, feed technology, analytical methodsedited by J. Huisman, T. F. van der Poel, and I. E. Liener, 121-124. Wageningen, Netherlands: Pudoc Scientific Publishers, 1989.

E. Teller, M. Vanbelle, Y. Beckers, and A. Thewis. "Bacterial fixation on feed particles and digestion of structural carbohydrates in the rumen." Mededelingen van de Faculteit Landbouwwetenschappen Rijksuniversiteit Gent, 54, 4a (1989): 1377-1386.

P. Leterme, Y. Beckers, and A. Thewis. "Inter- and intravarietal variability of the trypsin inhibitors content of peas and its influence on apparent digestibility of crude protein by growing pigs." In Recent Advances of Research in Antinutritional Factors in Legume Seedsedited by J. Huismans, T. Van der Poel, and I. Liener, 121-124. Wageningen, Netherlands: Pudoc, 1988.

Oral communications or posters

M. Fontin, Y. Beckers, A. Bien-Aimé, and D. Marlier. "Improvement of plantain leaves nutritive value in goats by urea treatment and nitrogen supplements." Paper presented at 5th Cogress on Agroforestry: Transitioning to a Viable World, 2022.

H. Amamou, M. Mahouachi, Y. Beckers, and H. Hammami. "Vulnerability assessments in dairy cattle farms based on individual sensitivity to heat stress." Poster session presented at 25th National Symposium for Applied Biological Sciences (NSABS), Gembloux, Belgium, 31 January 2020.

A.-C. Dalcq, T. Dogot, H. Soyeurt, Y. Brostaux, F. Vanwindekens, E. Froidmont, P. Rondia et al. "Strategies of the Walloon dairy producersfaced to the uncertain dairy future." Paper presented at 25th National Symposium for Applied Biological Sciences (NSABS), Gembloux, Belgium, 31 January 2020.

L. Fagnant, O. Duchêne, J. Bindelle, B. Dumont, C. David, Y. Beckers, B. Bodson, and O. Roiseux. "Etude de l’impact de la fertilisation azotée et de la fauche à l’automne sur les différentes productions d’une culture céréalière pérenne (Th. intermedium)." Poster session presented at Congrès Phloème 2020, Paris, France, 29 January 2020.

C. De Clerck, B. Dumont, Y. Beckers, B. Bodson, G. Colinet, J.-T. Cornelis, M. Dufrêne, A. Monty, J. Pierreux, and J. Bindelle. "Reconnecting agriculture to food systems for global sustainability. The example of long term experimental crop rotations of AgricultureIsLife." Paper presented at 25th National Symposium for Applied Biological Sciences, 2020.

L. Fagnant, Duchene Olivier, David Christophe, Y. Beckers, B. Bodson, J. Bindelle, and B. Dumont. "INFLUENCE OF NITROGEN FERTILISATION AND AUTUMN MOWING ON DUAL USE OF THINOPYRUM INTERMEDIUM." Paper presented at ASA, CSSA and SSSA International Annual Meetings, United States, 2020.

C. De Clerck, B. Dumont, Y. Beckers, B. Bodson, G. Colinet, J.-T. Cornelis, M. Dufrêne, A. Monty, J. Pierreux, and J. Bindelle. "AgricultureIsLife: an experimental platform to assess the long term stability of innovative rotations for contrasting future feeding systems." Paper presented at Belgian Nutrition Society hot topic seminar, 13 November 2019.

C. De Clerck, B. Dumont, Y. Beckers, B. Bodson, G. Colinet, J.-T. Cornelis, M. Dufrêne, A. Monty, J. Pierreux, and J. Bindelle. "AgricultureIsLife: une plateforme expérimentale visant à tester la stabilité à long terme de rotations innovantes et leur capacité à répondre à des régimes alimentaires futurs et contrastés." Poster session presented at Workshop "transition agroécologique", Beauvais, France, 18 October 2019.

H. Amamou, M. Mahouachi, Y. Beckers, and H. Hammami. "Physiological processes as linked to heat stress effects on production traits of Holstein cows." Poster session presented at 70th Annual Meeting of the European Federation of Animal Science (EAAP), Ghent, Belgium, 26 August 2019.

A.-C. Dalcq, Y. Beckers, B. Wyzen, E. Reding, P. Delhez, and H. Soyeurt. "Successful economic management differs between intensive and extensive dairy farms." Paper presented at 70th Annual Meeting of the European Federation of Animal Science, Ghent, Belgium, 26 August 2019.

M. Lognoul, L. Gourlez de la Motte, A. Naiken, M. Lonneux, J. Segers, N. Arriga, M. Roland et al. "Restoring a worn-out pasture: what impact on N2O exchanges ?." Poster session presented at European Geosciences Union General Assembly, Vienne, Austria, 08 April 2019.

L. Gourlez de la Motte, P. Dumortier, Y. Beckers, B. Bodson, B. Heinesch, and M. Aubinet. "Herd position habits can bias net CO2 ecosystem exchange estimates in free range grazed pastures." Paper presented at EGU General Assembly 2019, Vienne, Austria, April 2019.

F. Huart, F. Bera, C. Blecker, P. Malumba Kamba, and Y. Beckers. "Does in vitro protocol predict the nutritional value of thermally treated cereals?." Poster session presented at 32nd EFFoST International Conference: Developing innovative food structures and functionalities through process and reformulation to satisfy consumer needs and expectations, Nantes, France, 06 November 2018.

M. Lognoul, L. Gourlez de la Motte, A. Debacq, A. Naiken, M. Lonneux, J. Segers, N. Arriga et al. "Restoring a worn-out pasture : What impact on greenhouse gas exchanges ?." Poster session presented at ICOS 3rd Science Conference, Prague, Czechia, 12 September 2018.

S. Herremans, V. Decruyenaere, Y. Beckers, and E. Froidmont. "Influence of chestnut tannins on in vitro crude protein rumen degradability kinetics of red clover silage." Poster session presented at 10th International Symposium on the Nutrition of Herbivores, Clermont-Ferrand, France, September 2018.

H. Amamou, M. Mahouachi, Y. Beckers, and H. Hammami. "Physiological and production responses of Tunisian Holsteins under heat stress conditions." Paper presented at 69th Annual Meeting of the European Federation of Animal Science (EAAP), Dubrovnik, Croatia, 30 August 2018.

A.-C. Dalcq, Y. Beckers, B. Wyzen, E. Reding, P. Delhez, and H. Soyeurt. "Behavior patterns to the intensification vary differently within dairy producers." Paper presented at 69th Annual Meeting of the EAAP (European Fedreration of Animal Science), Dubrovnik, Croatia, 27 August 2018.

L. Gourlez de la Motte, Y. Beckers, B. Bodson, B. Heinesch, and M. Aubinet. "Rotational and continuous grazing does not affect the total net ecosystem exchange of a pasture grazed by cattle but modifies CO2 exchange dynamics." Paper presented at European Geoscience Union general assembly 2018, Vienne, Austria, April 2018.

G. Kalala Bolokango, B. Kambashi, N. Everaert, Y. Beckers, B. Pachikian, A. Neyrinck, N. Delzenne, and J. Bindelle. "Effect of a diet rich in prebiotic fibers of inulin type and behavior on intestinal health in obese patients in an human in vitro fermentation patterns." Paper presented at 23rd National Symposium for applied Biological Sciences, Bruxelles, Belgium, 08 February 2018.

G. Kalala Bolokango, B. KAMBASHI, N. Everaert, Y. Beckers, A. Richel, and J. Bindelle. "Effet de la cuisson sur le profil en fibres de quelques légumes tropicaux." Poster session presented at Congrès International sur les journées Francophones de Nutrition, Nantes, France, 13 December 2017.

A.-C. Dalcq, H. Soyeurt, T. Dogot, Y. Brostaux, P. Delhez, F. Vanwindekens, E. Froidmont et al. "Ideal future dairy farm: a Walloon breeders’ point of view." Paper presented at 68th Annual Meetinf of of the European Federation of Animal Science, Tallin, Estonia, 30 August 2017.

S. Herremans, V. Decruyenaere, Y. Beckers, and E. Froidmont. "Innovative silage additives to reduce proteolysis in the silo." Poster session presented at 19th Symposium of the European Grassland Federation, Alghero, Italy, 10 May 2017.

B. Li, J. Leblois, B. Taminiau, L. Willems, Y. Beckers, J. Bindelle, and N. Everaert. "The effect of inulin and/or wheat bran in the diet during early life on intestinal health of broiler chicks." Paper presented at 21st European Symposium on Poultry Nutrition (ESPN 2017), 08 May 2017.

B. Li, J. Leblois, Y. Beckers, J. Bindelle, and N. Everaert. "Effect of inulin supplementation in the lactation period on the performance of piglets." Paper presented at 42nd ANR (Animal Nutrition Research), 07 April 2017.

H. Amamou, H. Hammami, M. Mahouachi, and Y. Beckers. "Tunisian dairy farmers’ perceptions of climate change impacts and options for adaptation." Paper presented at 22ND National Symposium for Applied Biological Sciences (NSABS), Leuven, Belgium, 07 February 2017.

S. Herremans, V. Decruyenaere, Y. Beckers, and E. Froidmont. "Comparison of two laboratory-scale ensiling methods to assess effect of reducing sugars." Poster session presented at 22nd National Symposium for Applied Biological Sciences, Leuven, Belgium, 07 February 2017.

G. Kalala Bolokango, B. Kambashi Mutiaka, P. Njeumen, N. Everaert, Y. Beckers, A. Richel, B. Pachikian, A. Neyrinck, N. Delzenne, and J. Bindelle. "Le profil en fibres alimentaires de légume modifie leur fermentation intestinale et la production d’acides gras à chaine courte dans modèle in vitro humain." Poster session presented at Les Journées Francophones de Nutrition, Montpellier, France, 01 December 2016.

J. Leblois, J. Bindelle, F. Dehareng, S. Massart, B. Li, H. Soyeurt, Y. Beckers, and J. Wavreille. "Impact of high-wheat bran diet on sows’ microbiota, performances and progeny’s growth and health." Paper presented at 67th Annual Meeting of the European Federation of Animal Science (EAAP), Belfast, United Kingdom, 02 September 2016.

A.-C. Dalcq, T. Dogot, H. Soyeurt, Y. Brostaux, F. Vanwindekens, E. Froidmont, P. Rondia et al. "Strategies of the Walloon dairy breeders faced to the uncertain dairy future." Paper presented at 67th Annual Meeting of the European Federation of Animal Science, Belfast, United Kingdom, 01 September 2016.

G. Kalala Bolokango, B. Kambashi Mutiaka, G. P. Njeumen Lemotio, Y. Beckers, A. Richel, B. Pachikian, A. M. Neyrinck, N. Delzenne, N. Everaert, and J. Bindelle. "Impact of cooking and species on intestinal fermentation patterns of vegetables in a humanized in vitro model of the gastro-intestinal tract." Poster session presented at 10th symposium gut microbiology 20 years and counting, Clermont Ferrand, France, 21 June 2016.

C. POELAERT, X. Despret, D. Portetelle, M. Sindic, G. Eppe, B. Taminiau, G. Daube et al. "Effects of protein source and cooking procedure on intestinal microbiota and on fermentation end-products in rats." Poster session presented at 10th INRA-Rowett Symposium Gut Microbiology, Clermont-Ferrand, France, June 2016.

B. Li, F. Huart, J. Leblois, Y. Beckers, J. Bindelle, and N. Everaert. "Optimizing performance and health in poultry by dietary strategies : Focus on gastrointestinal ecophysiology." Poster session presented at TERRA Innovation Fair, 20 May 2016.

J. Leblois, J. Bindelle, F. Dehareng, B. Li, H. Soyeurt, Y. Beckers, J. Wavreille, and N. Everaert. "Impact of wheat bran supplementation to sows on their milk quality, their performances and their progeny’s." Paper presented at Animal Nutrition Research Forum 2016, Wageningen, Netherlands, 15 April 2016.

S. Vandermeulen, J. Leblois, C. A. Ramírez-Restrepo, Y. Beckers, G. Lognay, and J. Bindelle. "In vitro evaluation of protein precipitation capacity of temperate browse species." Poster session presented at The 21st National Symposium for Applied Biological Sciences (NSABS 2016), Antwerpen, Belgium, 05 February 2016.

P. Dumortier, A. Andriamandroso, M. Aubinet, Y. Beckers, J. Bindelle, L. Gourlez de la Motte, F. Lebeau, and B. Heinesch. "OUTDOOR MEASUREMENT OF CATTLE METHANE EMISSIONS USING THE EDDY-COVARIANCE TECHNIQUE IN COMBINATION WITH GEOLOCALIZATION DEVICES." Poster session presented at 6th Greenhouse Gas and Animal Agriculture Conference, February 2016.

L. Gourlez de la Motte, Y. Beckers, B. Bodson, B. Heinesch, and M. Aubinet. "Carbon balance of an intensively grazed permanent grassland in southern Belgium." Paper presented at The 2nd ICOS science conference, Helsinki, Finland, 2016.

L. Gourlez de la Motte, E. Jerome, O. Mamadou, Y. Beckers, B. Bodson, B. Heinesch, and M. Aubinet. "Carbon balance of an intensively grazed grassland in southern Belgium." Poster session presented at European Geoscience Union genral assembly 2016, Vienne, Austria, 2016.

S. Vandermeulen, C. A. Ramìrez-Restrepo, Y. Beckers, H. Claessens, and J. Bindelle. "Review of shrubs and trees in intensive ruminant systems in temperate areas." Paper presented at The 1st International Conference: Steps to Sustainable Livestock, Bristol, United Kingdom, January 2016.

A.-C. Dalcq, Y. Beckers, B. Wyzen, P. Mayeres, and H. Soyeurt. "Effect of calving interval on the economic results of dairy farms based on their typology." Paper presented at ADSA ASAS Joint Annual Meeting 2015, Orlando, United States, 15 July 2015.

Y. Beckers. "L'exploitation laitière de demain : présentation de l'enquête." Paper presented at Carrefour des Productions animales, 20ème édition "L'exploitation laitière wallonne de demain : du point de vue des acteurs aux propositions de la reccherche", Gembloux, Belgium, 11 February 2015.

Y. Beckers. "L'exploitation laitière de demain : conclusions." Paper presented at Carrefour des Productions animales, 20ème édition "L'exploitation laitière wallonne de demain : du point de vue des acteurs aux propositions de la reccherche", Gembloux, Belgium, 11 February 2015.

Y. Blaise, F. Lebeau, A. Andriamandroso, Y. Beckers, B. Heinesch, and J. Bindelle. "PATTERNS OF CARBON DIOXIDE AND METHANE EMISSION OF GRAZING COWS ON PASTURE." Poster session presented at The 20th National Symposium of Applied Biological Sciences (NSABS-2015), Louvain, Belgium, 30 January 2015.

E. Jerome, L. Gourlez de la Motte, Y. Beckers, B. Bodson, C. Moureaux, and M. Aubinet. "Carbon balance of a grazed pasture and its response to grazing management." Poster session presented at 1st ICOS International Conference on Greenhouse Gases and Biogeochemical Cycles, 24 September 2014.

H. Soyeurt, A. Vanlierde, M.-L. Vanrobays, P. Kandel, E. Froidmont, F. Dehareng, Y. Beckers, P. Dardenne, and N. Gengler. "Using milk spectral data for large-scale phenotypes linked to mitigation and efficiency." Paper presented at 65th annual meeting of the European Federation of Animal Science, Copenhagen, Denmark, 26 August 2014.

P. Dumortier, M. Aubinet, Y. Beckers, H. Chopin, A. Debacq, E. Jerome, F. Wilmus, and B. Heinesch. "Cattle methane fluxes measurement over an intensively grazed grassland using eddy covariance." Poster session presented at Greenhouse Gas Management in European Land Use Systems, September 2013.

E. Jerome, Y. Beckers, B. Bodson, P. Dumortier, C. Moureaux, and M. Aubinet. "Impact of grazing on carbon dioxide flux exchanges in an intensively managed grassland." Poster session presented at Greenhouse Gas Management in European Land Use Systems, Antwerp, Belgium, September 2013.

P. Dumortier, M. Aubinet, H. Chopin, A. Debacq, E. Jerome, Y. Beckers, and B. Heinesch. "Yearly follow-up of methane turbulent exchange over an intensively grazed grassland in Belgium." Poster session presented at Greenhouse Gases & Animal Agriculture, June 2013.

E. Jerome, Y. Beckers, B. Bodson, P. Dumortier, C. Moureaux, and M. Aubinet. "Impacts of grazing on carbon dioxide fluxes of an intensively grazed grassland in Belgium." Poster session presented at Greenhouse Gases and Animal Agriculture Conference (GGAA), Dublin, Ireland, June 2013.

J. Beekkerk van Ruth, C. Moureaux, A. Degré, E. Jerome, Y. Beckers, B. Bodson, and M. Aubinet. "Temporal variability of nitrous oxide fluxes from a fertilized grassland in Belgium: preliminary results from dynamic closed chambers." Poster session presented at EGU General Assembly 2013, Vienne, Austria, 09 April 2013.

J. Beekkerk van Ruth, C. Moureaux, A. Degré, E. Jerome, Y. Beckers, B. Bodson, and M. Aubinet. "TEMPORAL VARIABILITY OF N2O FLUXES FROM A FERTILIZED GRASSLAND: PRELIMINARY RESULTS FROM DYNAMIC CLOSED CHAMBERS." Poster session presented at EGU: general assembly, 09 April 2013.

E. Jerome, Y. Beckers, J. Beekkerk van Ruth, B. Bodson, P. Dumortier, C. Moureaux, and M. Aubinet. "Impact of grazing on carbon balance of an intensively grazed grassland in Belgium." Poster session presented at European Geosciences Union, Vienne, Austria, 09 April 2013.

Y. Beckers. "L'équilibre des rations alimentaires des bovins wallons, pistes d'amélioration de l'efficience azotée." Paper presented at Deuxième Atelier Nitrate Eau, Peyresq, France, 29 May 2012.

E. Jerome, Y. Beckers, B. Bodson, C. Moureaux, and M. Aubinet. "Carbon balance of an intensive grazed grassland." Poster session presented at EGU General Assembly 2012, Vienne, Austria, 23 April 2012.

M. Hissette, J. Destain, A. Thewis, P. Thonart, and Y. Beckers. "Biofuel by-product for poultry diets." Poster session presented at Advanced Biofuels in a Biorefinery Approach, Copenhagen, Denmark, 28 February 2012.

M. Hissette, J. Destain, A. Thewis, P. Thonart, and Y. Beckers. "Ex vivo ruminal cellulosome for by-product biomass conversion." Paper presented at Enzymes and Biocatalysis, Dalian, China, 27 April 2011.

J.-Y. Zimmer, C. Saegerman, B. Losson, Y. Beckers, E. Haubruge, and F. Francis. "Chemical composition of silage residues sustaining the larval development of the C. obsoletus/scoticus complex species (Diptera: Ceratopogonidae)." Poster session presented at 5th Annual Meeting Epizone "Science on alert" - Satellite Symposium "Bluetongue and other vector borne diseases", Arnhem, Netherlands, 13 April 2011.

E. Jerome, Y. Beckers, B. Bodson, C. Moureaux, and M. Aubinet. "Carbon exchange in a Belgian grassland with cattle." Poster session presented at EGU General Assembly 2011, Vienne, Austria, 08 April 2011.

M. Hissette, J. Destain, A. Thewis, P. Thonart, and Y. Beckers. "Potential of ruminal cellulosome to valorise biofuel by-products - ex vivo aspect." Poster session presented at Journée scientifique annuelle de la Société Royale de Chimie, Gembloux, Belgium, 14 October 2010.

M. Hissette, J. Destain, A. Thewis, P. Thonart, and Y. Beckers. "Potential of ruminal cellulosome to valorise biofuel by-product - in vitro aspect." Poster session presented at Lignobiotech One Symposium, Reims, France, March 2010.

Y. Beckers. "Production de viande - environnement : levons les équivoques !." Paper presented at L'image de la viande et des produits de la viande, Journée d'étude BAMST, Liège, Belgium, 05 November 2009.

Y. Beckers. "Des protéines aussi dans l'herbe ... Comment bien les valoriser chez les bovins ?." Paper presented at Protéines végétales : quelles alternatives au soja dans nos exploitations ?, Gembloux, Belgium, 24 March 2009.

S. Vandeplas, R. Dubois Dauphin, Y. Beckers, P. Thonart, and A. Thewis. "The role of the specific immune response on cecal colonization of slow-growing broiler chickens reared on litter contaminated by Campylobacter jejuni." Paper presented at XIX European Symposium on the Quality of Poultry Meat & XIII European Symposium on the Quality of Eggs and Egg Products, Turku, Finland, 2009.

N. Bartiaux-Thill, P. M. Stassart, C. Lamine, J. Wavreille, Y. Beckers, and A. Thewis. "Different concepts of animal welfare and stakeholders arguments." Poster session presented at 4th International Workshop on the assessment of animal wefare and group level, Ghent, Belgium, 11 September 2008.

R. Chalghoumi, A. Thewis, D. Portetelle, and Y. Beckers. "Production of hen egg yolk immunoglobulins simultaneously directed against Salmonella enteritidis and salmonella typhimurium in the same egg yolk." Poster session presented at XXXIth BCLAS Symposium, Geel, Belgium, 15 November 2007.

Y. Beckers. "L'impact de la production de viande traditionnelle sur l'environnement." Paper presented at Assemblée générale de l'Union européenne du Commerce du Bétail et de la Viande, Ghent, Belgium, 27 October 2007.

D. Valkeners, Y. Beckers, A. Lindebrings, and A. Thewis. "Effect of ruminal degradable ,itrogen defocit on nitrogen metabolismingrowing double muscled Belgian Blue bulls fed beet pulp silage based diet." Poster session presented at International Symposium on Energy and Protein, Vichy, France, September 2007.

E. Froidmont, Y. Beckers, F. Dehareng, P. Rondia, P. Saive, and N. Barthiaux-Thill. "Utilization of lupin seed as the main protein source in broiler chicken feeding : influence of the variety and interest of protease addition." Poster session presented at 57th EAAP Annual Meeeting, Antalya, Turkey, 18 September 2006.

E. Frodimont, J. Wavreille, Y. Beckers, and N. Bartiaux-Thill. "Utilization of lupin (Lupinus albus var Arès) seeds in animal diets : synthetic report." Paper presented at 5th European Conference on grain Legumes and 2nd International Conference on legume Genomics and Genetics, Dijon, France, June 2004.

S. Vandeplas, Y. Beckers, and A. Thewis. "Effect of hemicellulase preparations on performance parameters, intestinal viscosity and apparent nutrient digestibility of male broilers fed a wheat-based diet." Poster session presented at 14th European Symposium on Poultry Nutrition, Lillehammer, Norway, 2003.

Y. Beckers. "Demain, quelles orientations pour les co-produits ?." Paper presented at Symposium : la gestion des co-produits issus de l'agro-industries : quelles opportunités pour l'alimentation animal, Beauvais, France, 19 April 2002.

Y. Beckers. "La valorisation des proéagineux et des oléagineux dans l'alimentation à la ferme." Paper presented at Journée d'étude APPO, Gembloux, Belgium, 25 January 2002.

Y. Beckers and E. Froidmont. "Optimalisation des apports en acides aminés pour des taurillons BBB en complément à une ration fermière." Paper presented at 8ème Journée Fourrages Actualités, Libramont, Belgium, 12 December 2001.

Y. Beckers and A. Thewis. "Méthodologies de mesures des apports en acides aminés alimentaires dans l'intestin chez le ruminants." Paper presented at Deuxième Carrefour des Productions Animales. la Filière Lait. Gembloux, Belgique, le 22 Janvier 1997, Gembloux, Belgium, 1997.

M. Kamoun, Y. Beckers, P. Lecomte, P. Dardenne, and A. Thewis. "Prévision de la dégradabilité in situ des matières azotées des fourrages par une méthode enzymatique." Paper presented at Deuxième Carrefour des Productions Animales. la Filière Lait. Gembloux, Belgique, le 22 Janvier 1997, Gembloux, Belgium, 1997.

Y. Beckers and A. Thewis. "Mise au point d'une méthode non-invasive de mesure de l'efficacité de la synthèse microbienne dans le rumen chez le taurillon Blanc Bleu Belge." Paper presented at Premier Carrefour des Productions Animales, Gembloux, Belgium, 1996.

M. Kamoun, Y. Beckers, A. Thewis, and E. François. "In situ N degradability of fresh forages corrected for the microbial contamination determined by 15N labelling of feedstuffs or of liquid and solid associated bacteria." Paper presented at 9èmes Journées de Recherche sur l'Alimentation et la Nutrition des Herbivores, Clermont-Ferrand, France, 1994.

P. Lecomte, S. Chabi, Y. Beckers, M. Kamoun, and A. Thewis. "Dégradabilité de la protéine corrigée de la contamination azotée bactérienne mesurée à quatre stades de développement sur des repousses de la végétation naturelle de savane en région de climat tropical humide (Ranch de l'Adélé, Togo)." Paper presented at 9èmes Journées de Recherche sur l'Alimentation et la Nutrition des Herbivores, Clermont-Ferrand, France, 1994.

P. Leterme, A. Thewis, and Y. Beckers. "De toepassing van ileorectostomie bij varkens voor de bepaling van de werkelijke ilealeaminozurenverteerbaarheid van erwent." Paper presented at 14e studiedag Nederlandstalige Voedingsonderzoekers, Leuven, Belgium, 1989.

Books

As author or co-author

E. Froidmont, Y. Beckers, and A. Thewis. Besoins spécifiques en acides aminés chez les taurillons Blanc Bleu Belge culards. 2001.

Book chapters and contributions to collective works

C. Vandenberghe, J.-P. Destain, Y. Beckers, B. Bodson, M. Deneufbourg, M. De Toffoli, I. Dufrasne et al. "Evaluation du troisième Programme de Gestion Durable de l'Azote en agriculture. Recommandations en matière de règlementations et de recherches scientifiques." In 2ème Atelier Nitrate - Eau. Evaluation du Programme de Gestion Durable de l'Azoteedited by C. Vandenberghe, G. Colinet, J.-P. Destain, and J. M. Marcoen, 301-306. Gembloux, Belgium: Presses Agronomiques de Gembloux, 2013.

A. Thewis and Y. Beckers. "La production de viande spécialisée, le culard Blanc Bleu Belge." In Manuel de Zootechnie comparée Nord-Sudby A. Thewis, R. Bourbouze, R. Compère, J. M. Duplan, and J. Hardouin, 212-219. Paris, France: Inra Editions, 2005.

Theses and dissertations

Doctoral thesis

Y. Beckers. "Etude méthodologique de la dégradabilité rumionale et de la digestibilité intestinale vraies des matières azotées totales des aliments concentrés et des acides aminés." Unpublished doctoral thesis, ULiège. GxABT - Liège Université. Gembloux Agro-Bio Tech, 1998.
Jury: Jury: A. Thewis (Promotor), C. Deroanne, A. Buldgen, R. Renaville, M. Marlier, A. Falisse, E. François, C. Poncet, and Demeyer. .

Expert reports

Y. Beckers. "Avis sur l'expertise de l'affaire Wathelet J. c/Commune de Meix-devant-Virton." Gembloux, Belgium: FUSAGx, 2009.

Y. Beckers. "Rapport de l’audit technologique de la société Dumoulin sa." 2007.

Learning materials

Course notes

Y. Beckers. "Production de viande bovine." 2022.

Y. Beckers. "Alimentation azotée des ruminants." 2022.

Y. Beckers. "Alimentation azotée des animaux de rente." Gembloux Agro-Bio Tech, Université de Liège, Cours de zootechnie - ESA du Kef 8 au 11 avril 2013. 2013.

Other publications and communications

Articles in scientific journals without peer reviewing

C. Battheu-Noirfalise, N. Weron, E. Froidmont, D. Stilmant, and Y. Beckers. "O82 The direct (meat) and indirect (organic fertilizers) contribution of beef cattle farms to food security." Animal. Science Proceedings, 14, no. 4 (July 2023): 596. doi:10.1016/j.anscip.2023.04.083

G. Koutinhouin, P. Tougan, K. Boko, I. Douada, M. Zannou, A. Ahoulou, Y. Beckers, C. Hanzen, and A. Thewis. "Testicular and Body Morphometric Traits of Mature Rams of Djallonke and Ouda Breeds Reared in North Benin." International Journal of Veterinary Science, 6, no. 2 (2017): 108-113.

C. Vandenberghe, J.-P. Destain, Y. Beckers, B. Bodson, M. Deneufbourg, M. De Toffoli, I. Dufrasne et al. "Evaluation of the third Action Programme. Recommendations for regulatory and scientific research." Biotechnologie, Agronomie, Société et Environnement, 17, SPL1 (2013): 301-306.

Computer developments

Y. Beckers. "Logiciel de formulation." 2011.

Y. Beckers. "Logiciel de rationnement." 2010.

Speeches and writings for a general audience

General audience and popularisation articles

J. Favre, Y. Beckers, J. Bindelle, B. Dumont, B. Mercatoris, and H. Soyeurt. "La terre ferme." 24h01, la revue belge de grands reportages (2017).

C. De Maeseneire, M. Sindic, C. Colot, and Y. Beckers. "L'âge d'abattage influence-t-il la qualité de la viande?." Sillon Belge (2014).

C. De Maeseneire, M. Sindic, C. Colot, and Y. Beckers. "Welke impact heeft de slachtleeftijd bij vleeskuikens op de zintuiglijke eigenschappen van het vlees?." Pluimvee, 1 (January 2014): 9-11.

C. De Maeseneire, M. Sindic, and Y. Beckers. "Moduler l'âge d'abattage des poulets de chair: Quel impact sur la qualité organoleptique de la viande?." Filière Avicole et Cunicole, 47 (October 2013): 6-9.

E. Jerome, Y. Beckers, B. Bodson, P. Dumortier, J. Beekkerk van Ruth, B. Heinesch, C. Moureaux, and M. Aubinet. "Agriculture et changements climatiques: bilan de carbone d'une prairie pâturée en Région wallonne." Côté Boeuf: Magazine Semestriel de la FVBW, 10 (December 2012): 3-8.

Y. Beckers, E. Jerome, C. Moureaux, B. Bodson, and M. Aubinet. "Production de viande - réchauffement climatique." Côté Boeuf: Magazine Semestriel de la FVBW, 7 (June 2011): 6-8.

Y. Beckers. "Rations d'engraissement, rappel de quelques fondamentaux." Wallonie Elevagesno. 5 (2011): 14-15.

F. Piron, M. Philippart de Foy, A. Thewis, and Y. Beckers. "Influência da modalidade de apresentação do trigo." Albéitar Portugal, 7, no. 2 (2011): 60-62.

F. Piron, M. Philippart de Foy, A. Thewis, and Y. Beckers. "Influencia de la modalidad de presentación del trigo." Albéitar Revista, 136, junio (2010): 56-58.

N. Bartiaux-Thill, P. M. Stassart, C. Lamine, J. Wavreille, Y. Beckers, and A. Thewis. "Eleveurs et consommateurs, que pensent-ils de l'élevage." Les Nouvelles de l'Automne (2007): 27-29.

Y. Beckers. "Le système d'évaluation protéique des DVE chez les bovins." Wallonie Elevagesno. 10 (2006): 36-39.

Y. Beckers. "La nutrition minérale des bovins, une matière complexe." Wallonie Elevagesno. 8 (2005): 41-46.

Y. Beckers, O. Wéry, and A. Thewis. "Potentiel zootechnique du froment d'hiver chez le poulet de chair." Fumure et Protection Phytosanitaire des Céréales (2004): 1-6.

F. Piron, Y. Beckers, and A. Thewis. "Sélectionner du froment d’hiver spécifiquement pour le poulet de chair ?." Nouvelles de l'Agriculture (Les), 30 (2004): 14-15.

O. Wéry, A. Thewis, and Y. Beckers. "Valorisation du froment d'hiver dans l'alimentation du poulet de chair." Fumure et Protection Phytosanitaire des Céréales (2003): 1-6.

Y. Beckers, L. Delbouille, and A. Thewis. "Produire du veau de boucherie en Wallonie : une opportunité pour les élevages laitiers." Sillon Belge (2003): 13-16.

O. Wéry, A. Thewis, and Y. Beckers. "Valorisation du froment d'hiver dans l'alimentation du poulet de chair." Filières Avicole et Cunicoleno. 7 (2003): 7-11.

Y. Beckers. "La vache, son rumen et ses microorganismes." Probio-Revue, 1 (1999): 46-51.

Conferences given outside the academic context

Y. Beckers. "Elevage bovin et gaz à effet de serre, état des lieux et piste d'amélioration." Paper presented at Assemblée générale de la coopérative Les Eleveurs belges, Marchovelette, Belgium, 2022.

Y. Beckers. "Enjeux et perspectives de l’autosuffisance alimentaire en élevage." Paper presented at Agr-e-sommet - Nourrir nos animaux d’élevage : des enjeux et des solutions !, Libramont, Belgium, 2020.

Y. Beckers. "De la nutrition de l’animal à l’assiette du consommateur, quelle valeur ajoutée pour l’éleveur ? Enjeux et tendances." Paper presented at Agr-e-sommet - Nourrir nos animaux d’élevage : des enjeux et des solutions !, Libramont, Belgium, 2020.

Y. Beckers and N. Everaert. "Importance et opportunités de l’aviculture en Région wallonne Les éléments factuels mais aussi …." Paper presented at Réunion CCATM/CCLGA 24/02/2020, Nassogne, Belgium, 2020.

Y. Beckers. "Quel fourrage pour quelle autonomie ?." Paper presented at Atelier sur l'interprétation des analyses de vos fourrgaes, Emptinne, Belgium, 2019.

F. Huart, P. Malumba Kamba, Y. Beckers, F. Bera, N. Peclers, and R. Thomas. "Le séchage est susceptible d’affecter la valeur énergétique des lots de maïs à destination des poulets de chair." Paper presented at 18ème journée d'étude des productions porcines et avicoles, Namur, Belgium, 2018.

Y. Beckers. "Quel fourrage pour quelle autonomie ?." Paper presented at Journée de formation, Emptinne, Belgium, 2018.

Y. Beckers. "L'équilibre des rations des ruminants et autonomie alimentaire." Paper presented at Groupe d'étude sur l'autonomie alimentaire, Etalle, Belgium, 2018.

A. Farinelle and Y. Beckers. "Des vaches qui transforment efficacement les fourrages en lait : un pas vers plus d'autonomie." Paper presented at Une utilisation efficiente des ressources fourragères pour une meilleure autonomie, Attert, Belgium, 2018.

Y. Beckers. "Les bovins : en faut-il encore dans nos prairies et nos assiettes ?." Paper presented at Fransnes-lez-Anvaing soutient ses agriculteurs, Frasnes-lez-Anvaing, Belgium, 2017.

Y. Beckers. "Les xylanases : hier et demain ?." Paper presented at Belfeed prend des couleurs !, Nantes, France, 2016.

Y. Beckers. "Nourrir à l’herbe : principales règles nutritionnelles pour réussir." Paper presented at Prairies et légumineuses fourragères au centre des enjeux économiques des élevages pour demain, Battice, Belgium, 2016.

Y. Beckers. "L'acétonémie : un bien ou un mal nécessaire pour la vache laitière ?." Paper presented at Journée d'étude sur l'acétonémie chez la vache laitière, Ciney, Belgium, 2016.

A.-C. Dalcq, Y. Beckers, T. Dogot, Y. Brostaux, N. Gengler, C. Hanzen, P. Mayeres, and B. Wyzen. "Contribution à l'optimisation technico-économique des élevages laitiers en Wallonie : l'intervalle vêlage." Paper presented at Assemblée générale des l'éleveurs de l'AREDB (Association régionale des éleveurs et des détenteurs de bovins), Aubel, Belgium, 2016.

Y. Beckers. "Des vaches et des prairies : en faut-il encore ?." Paper presented at Conférence - débat, Malmedy, Belgium, 2014.

Y. Beckers. "Comment améliorer les taux de matières utiles dans le lait ? Solutions actuelles et perspectives." Paper presented at Assemblée générale de l'AREDB de Herve, Fléron et Visé, Herve, Belgium, 2014.

Y. Beckers. "A côté des produits de la prairie, quels aliments pour complémenter les rations des vaches laitières ?." Paper presented at Autonomie alimentaires : est-ce possible dans nos exploitations ?, Remouchamps, Belgium, 2014.

Y. Beckers. "La prairie : quelles forces et faiblesses pour l'agriculture wallonne ?." Paper presented at Notre agriculture familiale et l'environnement : des alliés !, Heyd, Belgium, 2013.

Y. Beckers. "Quelle place pour la viande rouge dans nos assiettes ?." Paper presented at Assemblée générale du Rotary Club de Saint-Ghislain, Sain-Ghislain, Belgium, 2013.

Y. Beckers. "Les légumineuses comme source protéique dans la ration des ruminants." Paper presented at Abeille, Agroculture & Alimentation, Marloie, Belgium, 2013.

Y. Beckers. "Viser l'autonomie alimentaire dans les élevages bovins : facteurs limitants, éléments à prendre en compte et pistes à envisager." Paper presented at Assemblée générale de la Fédération des Jeunes Agriculteurs, "Linstallation dans les secteurs de l'élevage : quels leviers d'actions pour les jeunes ? Quels rôles pour la FJA ?", Gembloux, Belgium, 2013.

Y. Beckers. "Les productions fourragères en intercultures : quel potentiel pour l'alimentation des bovins en système allaitant ?." Paper presented at Assemblée générale des comices agricoles de la région de Thuin, Gerpinnes, Belgium, 2013.

Y. Beckers. "Quelle place pour la viande rouge dans nos assiettes ?." Paper presented at Journée provinciale des agricultrices de l'UAW pour le Brabant wallon, Thorambais-Les-Beguines, Belgium, 2013.

Y. Beckers. "La production de viande par les bovins." Paper presented at Cours catégorie A - Techniques agricoles, Namur, Belgium, 2013.

Y. Beckers. "Quel objectif pour l'âge au premier vêlage en BBBc ?." Paper presented at Assemblée générale du Comice agricole de Neufchâteau, Ebly, Belgium, 2013.

Y. Beckers. "Quel objectif pour l'âge au premier vêlage en BBBc ?." Paper presented at Assemblé générale du comice agricole de Neufchâteau, Ebly, Belgium, 2013.

Y. Beckers. "Viande rouge : toujours d'actualité !." Paper presented at Assemblée générale de la SCAM, Huy, Belgium, 2012.

Y. Beckers and C. Bastin. "Capacité d'ingestion et variation des réserves corporelles chez la vache laitière au cours de la lactation." Paper presented at Journée d'étude : du tarissement au pic de lactation, Henri-Chapelle, Belgium, 2012.

Y. Beckers. "Viande rouge : toujours d'actualité !." Paper presented at Faut-il encore manger de la viande bovine ?, Bièvre, Belgium, 2012.

Y. Beckers. "Les aspects nutritionnels de la betterave fourragère et son intégration dans les rations." Paper presented at Autonomie en matière d'alimentation du bétail : la betterave fourragère, du semis à l'alimentation des bovins, Sirault, Belgium, 2012.

Y. Beckers. "Ration comparée conventionnelle - bio en élevage de bovin viande et lait." Paper presented at Conversion en Bio ? UNe orientation possible pour votre exploitation, Ciney, Belgium, 2012.

Y. Beckers. "Quel maïs servir aux vaches laitières ?." Paper presented at Soirée d'étude : Conseils de printemps en culture de maïs, Thines - Nivelle, Belgium, 2012.

Y. Beckers. "Quel maïs servir aux vaches laitières ?." Paper presented at Soirée d'étude : le maïs quelle partie récolter ?, Mortroux, Belgium, 2012.

Y. Beckers. "Trockenstand : kurz vs lang ? Laktation : lang vs kurz ?." Paper presented at Soirée d'étude : tarissement et lactation, Eynatten, Belgium, 2012.

Y. Beckers. "Alimentation et performances. Les femelles de remplacement." Paper presented at Soirée d'étude : Fertilité et jeune bétail, comment améliorer ma rentabilité ?, Bastogne, Belgium, 2012.

Y. Beckers. "La production de viande par les bovins." Paper presented at Module A : techniques agricoles, Bastogne, Belgium, 2012.

Y. Beckers. "Optimiser l'usage des fourrages auto-produits et viser l'autonomie protéique." Paper presented at Jurnée d'étude du réseau d'agriculteurs dans le cadre du projet "Parc naturel Haute Sure Forêt d'Anlier", Michamps, Belgium, 2011.

Y. Beckers. "La production de viande par les bovins." Paper presented at Module A : techniques agricoles, Philippeville, Belgium, 2011.

Y. Beckers. "La production de viande par les bovins." Paper presented at Module A : techniques agricoles, Ath, Belgium, 2011.

S. Vandeplas, Y. Beckers, and D. Bruyer. "La Belfeed : un moyen de contrôler la microflore du tube digestif de la volaille et du porc." Paper presented at Journée technique sur la Belfeed, Blain, France, 2011.

Y. Beckers. "Tarissement court vs long ? Lactation longue vs courte ?." Paper presented at Assemblée générale de l'AREDB de Herve - Fléron - Visé, Herve, Belgium, 2011.

Y. Beckers. "Les produits du maïs fourrage : comment les réfléchir dans les rations des bovins ?." Paper presented at Aspects rentabilité et valeur alimentaire du maïs grain (sec et humide) et du maïs épi broyé, Saint-Amand, Belgium, 2011.

Y. Beckers. "Les aspects nutritionnels de la betterave fourragère et son intégration dans les rations." Paper presented at Autonomie en matière d'alimentation du bétail : la betterave fourragère. "Du semis à l'alimentation des bovins", Rumes, Belgium, 2011.

Y. Beckers. "Les produits du maïs fourrage : comment les réfléchir dans les rations des bovins ?." Paper presented at Le maïs épis broyés et le maïs ensilage, Marloie, Belgium, 2010.

Y. Beckers. "Les produits du maïs fourrage : comment les réfléchir dans les rations des bovins ?." Paper presented at Maïs en épi broyé ou grain humide : comment utiliser ce concentré dans vos rations ?, Sart-Risbart, Belgium, 2010.

Y. Beckers. "Les aspects nutritionnels de la betterave fourragère et son intégration dans les rations." Paper presented at Autonomie en matière d'alimentation du bétail : la betterave fourragère, Laneuville, Belgium, 2010.

Y. Beckers. "Alimentation des ruminants." Paper presented at Cours de recyclage, Marloie, Belgium, 2010.

Y. Beckers. "La période de tarissement chez la vache laitière." Paper presented at Soirée détude sur l'alimentation et le management de la vache laitière, Aubel, Belgium, 2010.

Y. Beckers. "Aspects nutritionnels des vaches laitières et autonomie alimentaire." Paper presented at Journée d'étude, Autonomie alimentaire ... au Pays de Herve, Henri-Chapelle, Belgium, 2009.

Y. Beckers and E. Froidmont. "Le lupin : ses aspects nutritionnels et son intégration dans les rations des ruminants." Paper presented at L'autonomie basée sur l'herbe, les céréales, le lupin et la betterave fourragère, l'exemple de X. et G. Collignon, agriculteurs à Saint Ode, et le lupin : phytotechnie, intégration dans l'alimentation des bovins, Amberloup, Belgium, 2009.

Y. Beckers. "La réduction des frais d'alimentation des vaches laitières. Quelles possibilités à court et long termes ?." Paper presented at Le prix du lait augmente, les prix des aliments aussi, comment réagir ?, Remouchamps, Belgium, 2008.

Y. Beckers. "Peut-on se passer des céréales dans l'alimentation des bovins." 2007.

F. Piron, O. Wéry, B. Bodson, A. Thewis, and Y. Beckers. "L’utilisation du blé dans l’alimentation du poulet de chair en Wallonie." Paper presented at La belle histoire d'un grain de blé. Quarante ans du Livre Blanc Cérales - Fumure et protection des céréales, Gembloux, Belgium, 2007.

Y. Beckers. "L'alimentation hivernale des bovins." Paper presented at Soirée d'étude : alimentation des bovins, Comblain-au-Pont, Belgium, 2006.

Y. Beckers. "Les systèmes d'évaluation de la valeur énergéique et protéique des aliments." Paper presented at Cycle de cours, Virton, Belgium, 2006.

Y. Beckers. "Le ruminant : physiologie de la digestion et besoins alimentaires." Paper presented at Cycle de cours, Virton, Belgium, 2006.

Y. Beckers. "Rejets d'azote : coment faire pour les diminuer via l'alimentation." Paper presented at Formation continuée : l'alimentation azotée des ruminants, Gembloux, Belgium, 2006.

Y. Beckers. "Rejets d'azote : comment faire pour les diminuer via l'alimentation." 2006.

Y. Beckers. "La valorisation des céréales dans l'alimentation du bovin." 2006.

Y. Beckers, F. Piron, O. Wéry, S. Vandeplas, and A. Thewis. "Valorisation du blé fourrager dans l'alimentation du poulet de chair." Paper presented at Journée d'étude "Le blé fourrager dans l'alimentation animale.", Hammamet, Tunisia, 2005.

Y. Beckers. "La valorisation de la betterave fourragère dans l'alimentation de la vache laitière et du bétail à l'engraissement." Paper presented at Après-midi d'étude consacrée à "La betterave fourragère chez vous ?", Hemptinne, Belgium, 2002.

Y. Beckers. "La valoristion des oléo-protéagineux dans l'alimentation animale à la ferme." Paper presented at Conférence en production animale, Gembloux, Belgium, 2002.

Y. Beckers. "Utilisation des céréales en alimentation bovine." Paper presented at Soirée d'étude, Bastogne, Belgium, 2002.

Y. Beckers. "Les minéraux et vitamines chez la vache laitière." Paper presented at Soirée d'étude, Teuven, Belgium, 2002.

Y. Beckers. "L'amélioration de la qualité de l'alimentation bovine en vue de la réduction des émissions de méthane." Paper presented at Le plan wallon de l'air - "L"agriculture", Dinant, Belgium, 2002.

Y. Beckers. "Alimentation de la vache laitière : allier productivité, qualité et respect de l'environnement." Paper presented at Conférence en production animale, Antoing, Belgium, 2002.

Y. Beckers. "La valorisation de la betterave fourragère dans l'alimentation de la vache laitière et du bétail à l'engraissement." Paper presented at Après-midi d'étude consacrée à "La betterave fourragère chez vous ?", Thommen, Belgium, 2001.

F. Rossi, Y. Beckers, J. Wavreille, and A. Thewis. "Enrichissement en PUFA oméga 3 et CLA des produits des porcs et des volailles: mythe ou réalité." Paper presented at Journée d'étude "Santé animale, santé humaine - productions animales naturellement riches en oméga 3 et CLA favorables à la santé.", DG6, Ciney, Ciney, Belgium, 2001.

Y. Beckers. "L'alimentation des bovins Blanc Bleu Belge culards." Paper presented at Journée d'étude, Le Quesnoy, France, 2001.

Y. Beckers. "La valorisation de la betterave fourragère dans l'alimentation de la vache laitière et du bétail à l'engraissement." Paper presented at Après-midi d'étude consacrée à "La betterave fourragère chez vous ?", Mortroux, Belgium, 2000.

Y. Beckers. "Alimentation et fertilité en Blanc Bleu Belge." Paper presented at Soirée d'étude : alimentation des bovins, Jallet, Belgium, 2000.

Y. Beckers. "La pratique de l'alimentatin hivernale des bovins laitiers, ses buts, ses objectifs. Avantages de la mélangeuse distributrice, résultats obtenus sur le terrain." Paper presented at Les journées CESAM, Mons, Belgium, 2000.

Y. Beckers. "Alimentation du taurillon Blanc Bleu Belge culard." 2000.

Y. Beckers. "La valorisation de la betterave fourragère dan sl'alimentation de la vache laitière et du bétail à l'engraissement." Paper presented at Après-midi d'étude consacrée à "La betterave fourragère chez vous ?", Sampont, Belgium, 1999.

Y. Beckers. "Alimentation de la vache laitière en début de lactation." Paper presented at Soirée d'étude : alimentation des bovins, Welkenraedt, Belgium, 1999.

P. Lecomte, R. Agneessens, P. Dardenne, A. Thewis, and Y. Beckers. "Approches nouvelles en matière de qualité des fourrages." Paper presented at Fourrages Actualités, 2ème journée, Libramont, Belgium, 1995.

Y. Beckers. "Valeur alimentaire du pois protéagineux chez le porc." Paper presented at Après-midi d'étude en alimentation porcine, Deinze, Belgium, 1989.

Others

C. De Maeseneire, M. Sindic, and Y. Beckers. "Influence de l'âge et de l'accès parcours sur la qualité organoleptique du poulet de chair biologique." Paper presented at 1ère Journée d'étude sur l'élevage des volailles biologiques, Ciney, Belgium, 2014.