Rayman, M.P. (2012) Selenium and human health. Lancet, 379(9822): 1256-1268.
Sordillo, L.M. (2013) Selenium-dependent regulation of oxidative stress and immunity in periparturient dairy cattle. Vet. Med. Int., 2013: 154045.
Salman, S., Khol-Parisini, A., Schafft, H., Lahrssen- Wiederholt, M., Hulan, H.W., Dinse, D. and Zentek, J. (2009) The role of dietary selenium in bovine mammary gland health and immune function. Anim. Health Res. Rev., 10: 21-34.
Papp, L.V., Holmgren, A. and Khanna, K.K. (2010) Selenium and selenoproteins in health and disease. Antioxid. Redox. Signal., 12: 793-795.
Meschy, F. (2010) Nutrition Minérale des Ruminants. Editions Quae, Versaille, France.
Underwood, E.J. (1977) Trace Elements in Human and Animal Nutrition. 4th ed. Academic Press, New York, San F rancisco, London.
Spears, J.W. and Weiss, W.P. (2008) Role of antioxidants and trace ele ments in health and immunity of transition dairy cows. Vet. J., 176(1): 70-76.
Hambuckers, A., Dotreppe, O., Hornick, J.L., Istasse, L. and Dufrasn e, I. (2008) Soil-applied selenium effects on tissue selenium concentrations in cultivated and adventitious grassland and pasture plant species. Commun. Soil Sci. Plan., 39: 800-811.
De Temmerman, L., Waegeneers, N., Thiry, C., Du Laing, G., Tack, F. and Ruttens A. (2014) Selenium content of Belgian cultivated soils and its uptake by field crops and vegetables. Sci. Tot al Environ., 468-469: 77-82.
NRC (National research Council). (2001) Nutrient Requirements of Dairy Cattle. Seventh Revised Edition. National Research Council, National Acedemy Press, Washington, USA.
Pavlata, L., Pechová, A., Becvár, O. and Illek, J. (2001) Selenium status in cattle at slaughter: Analyses of blood, skeletal muscle, and liver. Acta. Vet. Brno., 70: 277-284.
Ivancic, J. Jr. and Weiss, W.P. (2001) Effect of dietary sulfur and selenium concentrations on selenium balance of lactating Holstein cows. J. Dairy Sci., 84: 225-232.
Peeters, A. (2010) Country pasture/forage resource profile for Belgium. FAO, AGPC, Rome. Available from: http://www.fao.org/ag/AGP/AGPC/doc/Counprof/Belgium/belgium. htm. Accessed on 15-03-2014.
Paglia, D.E. and Valentine, W.N. (1967) Studies on the quantitative and qualitative characterization of erythrocyte glutathione peroxidase. J. Lab. Clin. Med., 70(1): 158-169.
Kinoshita, C., Saze K.I., Kumata, S., Mastuki, T. and Homma S. (1996) A simplified method for the estimation of glutathione peroxidase activity and selenium concentration in bovine blood. J. Dairy Sci., 79: 1543-1548.
Dargatz, D.A. and Ross, P.F. (1996) Blood selenium concentrations in cows and heifers on 253 cow-calf operations in 18 states. J. Anim. Sci., 74: 2891-2895.
Graham, T.W. (1991) Trace element deficiencies in cattle. Vet. Clin. North. Am. Food Anim. Pract., 7: 153-215.
Stowe, H.D. and Herdt, T.H. (1992) Clinical assessment of selenium status of livestock. J Anim Sci., 70: 3928-3933.
Corah, L.R., Wright, C.L. and Arthington, J.D. (1998) Applied aspects of vitamin E and trace-mineral supplementation. Comp. Contin. Educ. Pract., 20: 866-874.
Radostits, O.M., Clive, C.G., Blood, D.C. and Hinchcliff, K.W. (2000) Veterinary Medicine: A Textbook of the Diseases of Cattle, Sheep, Pigs, Goats and Horses. 9th ed. Ltd Saunders, USA.
Herdt, T.H. and Hoff, B. (2011) The use of blood analysis to evaluate trace mineral status in ruminant livestock. Vet. Clin. North Am. Food, 27(2): 255-283.
Ortman, K. and Pehrson, B. (1999) Effect of selenate as a feed supplement to dairy cows in comparison to selenite and selenium yeast. J. Anim. Sci., 77(12): 3365-3370.
Knowles, S.O., Grace, N.D., Wurms, K. and Lee, J. (1999) Significance of amount and form of dietary selenium on blood, milk, and casein selenium concentrations in grazing cows. J. Dairy Sci., 82(2): 429-437.
Enjalbert, F., Lebreton, P. and Salat, O. (2006) Effects of copper, zinc and selenium status on performance and health in commercial dairy and beef herds: Retrospective study. J. Anim. Physiol. Anim. Nutr., 90(11-12): 459-466.
Puls, R. (1994) Mineral Levels in Animal Health: Diagnostic Data. Sherpa International, Clearbrook, B, Canada.
Malbe, M., Oinus, N., Praakle, K., Roasto, M., Vuks, A., Attila, M. and Saloniemi, H. (2005) Selenium status in dairy cows and feed samples in Estonia. In: Twenty Years of Selenium Fertilization, September 8-9, Helsinki, Finland. p91.
Zust, J. and Hrovatin, B. (1994) Assessment and prevention of selenium and vitamin E deficits in dairy cows. In: Proceedings 18th World Buiatrics Congress: 26th Congress of the Italian Association of Buiatrics, Bologna, Italy., August 29, September 2. Trenti, F. p657-660.
Christodoulopoulos, G., Roubies, N., Karatzias, H. and Papasteriadis, A. (2000) epizootiologic research of selenium and vitamin E concentrations in dairy cows of Thessaloni ki's county. J. Hell. Vet. Med. Soc., 51: 128-133.
Pavlata, L., Illek, J., Pechová, A. and Matejícek, M. (2002) Selenium status of cattle in the Czech republic. Acta Vet. Brno., 71: 3-8.
Gruender, H.D. and Auer, S. (1995) Selenium status of cattle in Hessian herds and possible preventive measures. Tieraerztl Umsch., 50: 250-255.
Guyot, H., Saegerman, C., Lebreton, P., Sandersen, C. and Rollin, F. (2009) Epidemiology of trace elements deficiencies in Belgian beef and dairy cattle herds. J. Trace Elem. Med. Biol., 23: 116-123.
Van Paemel, M., Dierick, N., Janssens, G., Fievez, V. and De Smet, S. (2010) Selected trace and ultratrace elements: Biological role, content in feed and requirements in animal nutrition-Elements for risk assessment. EFSA. Available from: http://www.efsa.europa.eu/en/scdocs/doc/68e.pdf. Accessed on 02-03-2014.
Waegeneers, N., Thiry, C., De Temmerman, L. and Ruttens A. (2013) Predicted dietary intake of selenium by the general adult population in Belgium. Food Addit. Contam. Part A Chem. Anal. Control Expo. Risk Assess., 30(2): 278-285.
Van Overmeire, I., Pussemier, L., Hanot, V., De Temmerman, L., Hoenig, M. and Goeyens, L. (2006) Chemical contamination of free-range eggs from Belgium. Food Addit. Contam., 23(11): 1109-1122.
De Behr, V., Hambuckers, A., Cabaraux, J.F., Kamphues, J., Istasse, L. and Dufrasne I. (2003) Production of selenium- enriched grass and haylage by mineral fertilization in southern Belgium. In: Proceedings of the 7th Conference of the European Society of Veterinary and Comparative Nutrition. Campus Druck, Hanover. p88.
Mehdi, Y., Hornick, J.L., Istasse, L. and Dufrasne, I. (2013) Selenium in the environment, metabolism and involvement in body functions. Molecules, 18(3): 3292-3311.
Hefnawy, A.E.G. and Tórtora-Pérez, J.L. (2010) The importance of selenium and the effects of its deficiency in animal health. Small Rumin. Res., 89: 185-192.
Dufrasne, I., Knapp, é., Istasse, L., Veselko, D., Piraux, é., Robaye, V. and Hornick, J.L. (2013) Influence de facteurs environnementaux influençant la teneur en urée dans le lait de vache en Wallonie et estimation des rejets azotés. Biotechnol. Agron. Soc. Environ., 17: 251-258.
Suttle, N.F. (2010) Mineral Nutrition of Livestock. 4th ed. British Library, London, UK.
Dufrasne, I., Istasse, L., Lambert, R., Robaye, V. and Hornick, J.L. (2010) étude des facteurs environnementaux influençant la teneur en urée dans le lait de vache en Wallonie (Belgique). Biotechnol. Agron. Soc. Environ., 14: 59-66.
Enjalbert, F., Lebreton, P., Salat, O. and Schelcher, F. (1999) Effects of pre- or postpartum selenium supplementation on selenium status in beef cows and their calves. J. Anim. Sci., 77(1): 223-229.
Kessler, J. (1993) Carence en sélénium chez les ruminants: Mesures prophylactiques. Rev. Suisse Agric., 25: 21-26.
Grilli, E., Gallo, A., Fustini, M., Fantinati, P. and Piva, A. (2013) Microencapsulated sodium selenite supplementation in dairy cows: Effects on selenium status. Animal, 7: 1944-1949.
Pilon-Smits, E.A. and Quinn, C.F. (2010) Selenium metabolism in plants. In: Cell Biology of Metals and Nutrients. Springer, Berlin, Heidelbergny.
Cabaraux, J.F., Hornick, J.L., Istasse, L. and Dufrasne, I. (2004) Impact de différents modes d'apport alimentaire de sélénium sur le statut en sélénium plasmatique chez le bovin. Rencontres Rech. Rumin., 11: 59-62.
Hall, J.A., Bobe, G., Hunter, J.K., Vorachek, W.R., Stewart, W.C., Vanegas, J.A., Estill, C.T., Mosher, W.D. and Pirelli, G.J. (2013) Effect of feeding selenium-fertilized alfalfa hay on performance of weaned beef calves. PLoS One, 8(3): e58188.
Hall, J.A., Harwell, A.M., Van Saun, R.J., Vorachek, W.R., Stewart, W.C., Galbraith, M.L., Hooper, K.J., Hunter, J.K., Mosher, W.D. and Pirelli, G.J. (2011) Agronomic biofortification with selenium: Effects on whole blood selenium and humoral immunity in beef cattle. Anim. Feed Sci. Technol., 164: 184-190.
Hall, J.A., Van Saun, R.J., Nichols, T., Mosher, W. and Pirelli, G. (2009) Comparison of selenium status in sheep after short-term exposure to high-selenium-fertilized forage or mineral supplement. Small Rumin. Res., 82: 40-45.
