References of "Moula, Nassim"
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See detailGrowth performance, carcass quality characteristics and colonic microbiota profiles in finishing pigs fed diets with different inclusion levels of rice distillers’ by‐product
Nguyen Cong, Oanh ULiege; Taminiau, Bernard ULiege; Pham Kim, Dang et al

in Animal Science Journal (2019)

The aim of this study was to evaluate the effects of diets containing rice distillers’ by-product (RDP) on growth performance, carcass characteristics, meat quality, and gut microbiota of fattening pigs ... [more ▼]

The aim of this study was to evaluate the effects of diets containing rice distillers’ by-product (RDP) on growth performance, carcass characteristics, meat quality, and gut microbiota of fattening pigs. Twenty-four crossbred finishing pigs (Duroc × Landrace × Yorkshire), 56.9 ± 3.1 kg initial body weight, were randomly allocated to three groups. For 56 days, pigs were fed one out of three diets including RDP0 (control), RDP15 (15% RDP in DM) and RDP30 (30% RDP in DM). With RDP level in diet, average daily gain and backfat thickness linearly increased (p < .05), and drip loss tended to increase (p ≤ .08). In addition, 16S ribosomal RNA gene amplicon profiling showed that RDP was associated with modulation of colonic microbiota composition, especially at family and genus levels. Relative abundance of Porphyromonadaceae and Erysipelotrichaceae families in colonic digesta increased with inclusion of RDP, while that of Enterobacteriaceae decreased. The proportion of genera unclassified Erysipelotrichaceae, and Butyrivibrio increased as inclusion of RDP. These results indicate that up to 30% inclusion in diet of finishing pigs, RDP can modulate colonic microbiota composition, and induces an improvement of animal growth and fat deposition. [less ▲]

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See detailA Meta-Analysis of the Effects of Insects in Feed on Poultry Growth Performances
Moula, Nassim ULiege; Detilleux, Johann ULiege

in Animals (2019), 9

We investigated and summarized results from studies evaluating the e ects of feeding poultry with insects on their growth performances. After a systematic review of studies published since 2000, two ... [more ▼]

We investigated and summarized results from studies evaluating the e ects of feeding poultry with insects on their growth performances. After a systematic review of studies published since 2000, two independent reviewers assessed the eligibility of each one based on predefined inclusion criteria. We extracted information on the study design, insects, avian species, and growth performances, i.e., average daily gain, feed intake, and feed conversion ratio. Next, we estimated pooled di erences between performances of poultry fed a diet with vs. without insects through random-e ects meta-analysis models. Additionally, these models evaluated the e ects of potential sources of heterogeneity across studies. Of the 75 studies reviewed, 41 met the inclusion criteria and included 174 trials. With respect to diets without insects, pooled di erences in growth performances were statistically not di erent from the null, but heterogeneity was marked across studies. Average daily gain decreased with increasing inclusion rates of insects, going below the null for rates of 10% and more. Grasshoppers were negatively associated with the average daily gain and positively associated with feed intake. The country of publication was another source of heterogeneity across publications. Overall, our results show insects should substitute only partially conventional protein sources and not be grasshoppers to guarantee the appropriate growth of birds. [less ▲]

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See detailBovine herpesvirus 1 in the northeast of Algiers, Algeria: Seroprevalence and associated risk factors in dairy herd
Kaddour, Abdenour; Bouyoucef, Abdallah; Fernandez, Gonzalo et al

in Journal of Advanced Veterinary and Animal Research (2019), 6(1), 6065

Objective: The present study was conducted to estimate the seroprevalence and associated risk factors of BoHV-1 in a dairy herd in the northeast of Algiers, Algeria. Materials and methods: The target area ... [more ▼]

Objective: The present study was conducted to estimate the seroprevalence and associated risk factors of BoHV-1 in a dairy herd in the northeast of Algiers, Algeria. Materials and methods: The target area is in northeast of Algiers with humid to semi-dry climate and known for its economically important production of cattle. A total of 1066 randomly selected individual blood samples of dairy herd collected at 120 dairy farms from rural districts of northeast of Algiers were evaluated with antibodies against BoHV-1 using commercial ELISA kits, to determine the BoHV-1 infection status of the herds. A questionnaire submitted to the farmers during collection of the blood samples was used to collect data on potential BoHV-1 associated risk factors. Results: In the present study, the estimated farm and individual animal BoHV-1 seroprevalence levels were 58.33% and 14.16%, respectively. A logistic regression analysis of random-effects model revealed that the significant associated risk factors for the present farm and individual animal seroprevalence levels were rural district, cattle introduced to the farm, region, and hygiene. Conclusion: This study found higher seroprevalence of BoHV-1 in the northeast of Algiers. The results could be used in designing the prevention and control strategy of BoHV-1 in the northeastern part of Algeria. [less ▲]

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See detailProductive performance, metabolic, and hematologic parameters of pregnant nulliparous rabbit does according to dietary protein level
Saidj, Dahia; Ainbaziz, Hacina; Iles, Imene et al

in Journal of Advanced Veterinary and Animal Research (2019), 6(1), 18-24

Objective: This study aims at investigating the productive performance, metabolic, and hematological profiles of Algerian local rabbits does during their first pregnancy and according to dietary protein ... [more ▼]

Objective: This study aims at investigating the productive performance, metabolic, and hematological profiles of Algerian local rabbits does during their first pregnancy and according to dietary protein content. Materials and methods: A total of 52 nulliparous rabbit does, 3,116 ± 72.9 g live weight, were allocated individually to three groups (17/18 females per group) being on isoenergetic diets [2,600 kcal Digestible Energy (DE)/kg] that differ in their digestible protein content by 15%, 17%, and 19%, respectively, for L, M, and H diets. All these diets were provided ad libitum. Results: The use of a high protein diet did not affect does weight and feed intake during the pregnancy period. Statistically, no significant difference (p > 0.05) was recorded in born or alive litter size and birth weight. There was no effect of diet and sampling time (p > 0.05) on plasma metabolites but there were significant effects of sampling time (p < 0.0001) on the metabolic parameters studied with prolificacy used as a covariate. Hematologic indices in pregnant rabbits were not affected by the diet exceeded the red blood cells rate that increased significantly (p < 0.05) with the increase in dietary protein content during the different periods of gestation. Conclusion: The use of a high protein diet has no effect on weight during the pregnancy period. No effect of diet and sampling time on plasma metabolites and hematological profiles are recorded; however, significant effects of sampling time are recorded on the metabolic parameters. [less ▲]

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See detailEffects of Opuntia ficus-indica on Growth Performance and Serum Parameters of Broiler Chicken in Algeria
Moula, Nassim ULiege; Humbel, Maïlis ULiege; Leterrier, Mélanie et al

in Tropicultura (2019), 37(1),

Thanks to the wide diversity of soil and climate, Algeria has a substantial number of plants which can be used in animal feed. This work is a part of the barbaric fig cladodes evaluation, widely present ... [more ▼]

Thanks to the wide diversity of soil and climate, Algeria has a substantial number of plants which can be used in animal feed. This work is a part of the barbaric fig cladodes evaluation, widely present in the Algerian rural landscape, as a broiler chicken feed supplement. The aims of this study are to measure the effects of Opuntia ficus-indica (OFI) powder on the growth performances, serum parameters and carcass characteristics of broiler chickens. The experiments were performed in a private poultry farm, located in the Chemini region. In this study, 120-Ross-308 days-old male chicks were monitored. They were divided into three groups according to the specific diet consumed (4 x 10 chicks by group). The group 1 was offered a commercial feed, while groups 2 and 3 received the same feed containing: 5% and 10% of OFI powder respectively. The OFI powder did not show any negative effect on the final body-weight, average daily gain and carcass characteristics. In contrast, it decreased (p < 0.05) some biochemical parameters in blood, like plasma glucose; uremia; cholesterol; and triglycerides. In conclusion, the OFI powder can be used as a potential additive in the commercial feed of broiler chickens which could efficiently reduce their cost sales in the Algerian market. [less ▲]

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See detailÉlevage ovin en Algérie: Analyse de situation
Moula, Nassim ULiege

Conference (2018, December 15)

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See detailCaractérisation de l'apiculture dans la Wilaya de Sétif
Touazi, Leghel; Yahi, Krimou; Moula, Nassim ULiege

Poster (2018, November 26)

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See detailEffects of Artemisia herba-alba or olive leaf (Olea europaea) powder supplementation on growth performance, carcass yield, and blood biochemical parameters in broilers
Ait-Kaki, Asma; Diaw, Mamadou Tandiang; Fikremariam, Geda et al

in Veterinary World (2018), 11(11), 1624-1629

Aim: This study was aimed to evaluate the effects of Artemisia herba-alba (white wormwood) or olive leaf (Olea europaea) powder supplementation on growth performance, carcass yield, and serum biochemical ... [more ▼]

Aim: This study was aimed to evaluate the effects of Artemisia herba-alba (white wormwood) or olive leaf (Olea europaea) powder supplementation on growth performance, carcass yield, and serum biochemical parameters in broilers. Materials and Methods: The study was conducted from April to May 2017 in Chemini region, Northern Algeria. A total of 60 1-day-old Ross 308 male chicks were divided into three groups consisted of 10 chicks, in each of two replications. The chicks in Group 1 were fed with a standard commercial diet (SCD); Group 2 received the same SCD with 2% supplementation of A. herba-alba powder; and Group 3 received the same SCD with 2% supplementation of O. europaea powder. Growth performance was measured with body weights every 2 weeks, daily feed intake, feed conversion ratio (FCR), and carcass yield at the end of 42 days of rearing. Blood samples were collected to analyze serum glucose, cholesterol, triglycerides, urea, and total protein levels. Results: Results showed that, at 42 days of rearing, supplementation of O. europaea and A. herba-alba significantly increased (p<0.001) mean body weight (2230.10±26.38 g and 2117.42±26.38 g, respectively, vs. 2336.66±27.88 g in chicks of Group 1), but there was no significant difference (p≥0.05) among the three diets for FCR or percentage carcass yield. Among the serum biochemical parameters, glucose was significantly affected (p<0.01) by supplementation of olive leaf powder (1.90 g/L: Group 3), compared to the SCD (2.24 g/L: Group 1) or Artemisia powder (2.05g/L: Group 2). Moreover, the supplementation of olive leaf powder in Group 3 broilers significantly affected (p<0.05) the serum cholesterol level (0.95 g/L), compared to the control diet (1.13 g/L). There was no significant difference (p≥0.05) for the other selected serum biochemical concentrations, namely triglycerides, urea, and total protein. Conclusion: The supplementation of Artemisia or olive leaf powder into the diet for broilers improved body weight by about 5% or 10%, respectively, at slaughter with moderate changes in blood biochemical parameters. [less ▲]

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See detailGestion de la reproduction des Faux bourdons par les apiculteurs de la Wilaya de Tizi-Ouzou
Yahi, Krimou; Kaidi, Rachid; Touazi, Leghel et al

Poster (2018, November 26)

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See detailA basic characterization of small-holders ’ goat production systems in Laghouat area, Algeria
Laouadi, Mourad; Tennah, Safia; Kafidi, Nacereddine et al

in Pastoralism (2018)

In order to investigate the practices of goat breeding and establish a classification of goat herds, a survey was conducted with 106 goat breeders in the semi-arid region of Laghouat. Two indigenous ... [more ▼]

In order to investigate the practices of goat breeding and establish a classification of goat herds, a survey was conducted with 106 goat breeders in the semi-arid region of Laghouat. Two indigenous breeds were encountered in this survey: the Arabia and the Mekatia; the Arabia being found as the dominant. The results show that breeders choose the breeding goats with a goal of generating more income in cash from the sale of products. The goat milk marketing chain appears to be weak. The milk produced is primary used for home consumption. A multivariate analysis categorized the goat farming of Laghouat region into three groups corresponding to three different farming systems: cluster 1 (pastoral system), cluster 2 (mixed crop-livestock system) and cluster 3 (small herds in zero grazing system). The in-depth study of the goals and contexts of goat farming in Laghouat will allow policy makers to design strategies for sustainable development of goat breeding in the region. [less ▲]

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See detailNutrient digestibility in Algerian local young rabbits according to dietary energy
Saidj, Dahia; Moula, Nassim ULiege; Kadi et al

in Animal (2018, September 02)

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See detailQualité des œufs de consommation de 3 types génétiques de poules commercialisés dans l’Est algérien
Moula, Nassim ULiege

in Archivos de Zootecnia (2018), 67 (259)

The aim of this study was to compare the commercial eggs quality in eastern Algeria. A total of 5004 eggs from three genetic types (local hens -PL, industrial -PI- hens and chickens from crossing local ... [more ▼]

The aim of this study was to compare the commercial eggs quality in eastern Algeria. A total of 5004 eggs from three genetic types (local hens -PL, industrial -PI- hens and chickens from crossing local chickens and industrial-PLPI- hens) were analyzed. Eggs weight, albumen weight and maximum breaking strength of the shell from the industrial strain were significantly higher than those from other genotypes (P <0.001). Eggs from local chickens, despite a lower weight to other genotypes (P <0.05) and were 54.15, 59.74 and 66.62g for PL, PLPI and PI respectively while yellow / albumen ration (0.57, 0.50 and 0.44 respectively) was higher (P <0.05). Maximum breaking strength of the shell was significantly (P <0.05) lowest in PL (35,99N), followed PLPI (36.76N) and highest in PI (37.30N). Significant correlation coefficients (P <0.001) were recorded between egg weight and albumen weight (0.95), yolk weight (0.50) and shell weight (0.69), albumen percentage (0.79), proportions of yellow (-0.74) and shell percentage (-0.37), the average thickness of the shell (0.60), Haugh units (-0.18), shape index (0.19), yellow / albumen ratio (-0.75) and the maximum breaking strength of the shell (0.10). The origin of the eggs influences significantly on composition and quality of commercial eggs in eastern Algeria. [less ▲]

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See detailEffect of the essential oil of Rosmarinus officinalis (L.) on rooster sperm motility during 4°C short-term storage
Touazi, Leghel; Aberkane, B.; Bellik, Y. et al

in Veterinary World (2018), 11(5), 590-597

Aim : This study aimed to investigate the protective effect of Rosmarinus officinalis (L.) essential oil on rooster sperm motility during 4°C short-term storage. Materials and Methods : R. officinalis ... [more ▼]

Aim : This study aimed to investigate the protective effect of Rosmarinus officinalis (L.) essential oil on rooster sperm motility during 4°C short-term storage. Materials and Methods : R. officinalis essential oil was analyzed using gas chromato graphy coupled to mass spectrometry to identify the active components. 10 of 45-week-old Hubbard commercial broilers were subjected to biweekly semen collections during 3 weeks. At each collection, sperm was pooled and divided into four aliquots and then diluted with Tris extender supplemented with 870, 87, or 8.7 μg/ml of R. officinalis essential oil, identified as treatments R, R5, and R10, respectively. Tris-based extender without any supplementation was considered as a control group. Diluted sperm was then stored at 4°C in the refrigerator and analyzed at 0, 6, 24, and 48 h using a computer-assisted sperm analyzer. Different semen parameters were measured including total motility, progressive motility, gametes velocities (straight line velocity [VSL], curvilinear velocity [VCL], and average path velocity [VAP]), amplitude of the lateral head displacement [ALH], and beat- cross frequency [BCF]. Results : The phytochemical analysis of R. officinalis essential oil revealed the presence of 25 active components including seven major molecules: Camphor (18.88%), camphene (5.17%), 1,8-cineole (7.85%), β-thujene (13.66%), α-thujene (4.87%), chrysanthenone (12.05%), and β-cubenene (7.97%). The results showed a beneficial effect of R. officinalis essential oil on sperm cells motility, particularly when using the lowest concentrations, 8.7 and 87 μg/ml. Progressive motility and gametes velocities (VCL, VSL, and VAP), materializing the quality of gametes motility, showed highly statistically significant values (p<0.01) in 8.7 and 87 μg/ml treatments, especially from 6 h of storage at 4°C. Conversely, the highest concentration (870 μg/ml) showed harmful effects with a total spermicidal activity after 24 h of storage. Conclusion : The current results revealed the positive impact of R. officinalis essential oil on rooster sperm at 4°C short-term storage probably through fighting against oxidative stress and cold shock damages. [less ▲]

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See detailEffect of Bacillus Species Rhizobacteria on Kabuli Chickpea Plants Growth under Pots and Field Conditions
Ait Kaki, Asma; Benhassine, Sara; Milet, Asma et al

in Research Journal of Applied Sciences (2018), 13(4), 245-251

In the present research, some Bacillus strains were produced at the industrial scale in order to be tested on chickpea growth, under pots and field conditions. Bacteria reached high sporulation yields ... [more ▼]

In the present research, some Bacillus strains were produced at the industrial scale in order to be tested on chickpea growth, under pots and field conditions. Bacteria reached high sporulation yields ranging from 0.8×109-2.5×109 and 8×109-10×109 spores mL-1 in flasks and 500 L bioreactor culture conditions, respectively. Under pots experiment, B. amyloliquefaciens (9SRTS) and B. amyloliquefaciens (CWBI) increased significantly the root mass (0.31 and 0.37 vs. 0.066 g, respectively) and reduced the percentage of discolored leaves per plant (41 and 26 vs. 74%, respectively). Under field conditions, chickpea plants reached 21.59, 23.11, 20.80 cm, after 1 month of growth in lots treated with CWBI; 9SRTS; 6SEL (B. atrophaeus), respectively in comparison to control (17.63 cm). Root dry mass was not affected (p>0.05) and values were between 0.87 and 1.36 g. At harvest, the total number and mass of chickpea grains were higher in lots treated, compared to a control. Importantly, B. amyloliquefaciens (9SRTS) showed the best effect on chickpea crop yield (236 vs. 176 grains; 153 vs. 114 g). These data estimated per hectare reached 7.65 vs. 5.7 q, so, a gain of 2 quintals per ha. [less ▲]

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See detailCaractérisation de la race ovine algérienne Tazegzawth
Moula, Nassim ULiege

in Tropicultura (2018), 36(1), 43-53

This paper aims at, firstly, highlighting the morpho-biometric characteristics of the Tazegzawth sheep breed, and, secondly, describing the sheep farmers profile and their farming practices. The study was ... [more ▼]

This paper aims at, firstly, highlighting the morpho-biometric characteristics of the Tazegzawth sheep breed, and, secondly, describing the sheep farmers profile and their farming practices. The study was carried out in Kabylie (Algeria) which is the breed cradle of Tazegzawth sheeps. The essay concerned 16 breed farmers located in the Wilayas of Bejaia and Tizi-Ouzou. Each of the 85 sheeps (24 rams and 61 ewes) was characterized and profiled. The study indicated that the sheep farming is a diversification activity and not a specialized activity. Other breeds and species are kept by the farmers. Due to the sharing of grazing areas between farmers, anarchic matings occurred contributing to the Tazegzawth breed’s decline. Farmers involved in this study were male having on average 12.13±3.84 livestock heads per household. All the farmers used local resources as supplement feeding: organic waste, crop leftovers, hay and olive foliage, ash, elm, oak and fig foliage. Average live weight of males (68.48±1.12 kg) were highly significantly higher (p-value <0.01) than the average live weight of females (53.84±1.16 kg). Livestock systems involving Tazegzawth breed showed high diversity. The multiple correspondences analysis indicated 4 groups depending on the time length over which animal breeding took place, the bred animal species, the number of Tazegzawth bred animals, and the aims and objectives of the animal farming. [less ▲]

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See detailThe effects of early age thermal conditioning and vinegar supplementation of drinking water on physiological responses of female and male broiler chickens reared under summer Mediterranean temperatures
Berrama, Zahra; Temim, Soraya; Djellout, Baya et al

in International Journal of Biometeorology (2018)

The effects of early age thermal conditioning (ETC), vinegar supplementation (VS) of drinking water, broilers’ gender, and their interactions on respiratory rate, body temperature, and blood parameters ... [more ▼]

The effects of early age thermal conditioning (ETC), vinegar supplementation (VS) of drinking water, broilers’ gender, and their interactions on respiratory rate, body temperature, and blood parameters (biochemical, hematological, and thyroid hormones) of broiler chickens reared under high ambient temperatures were determined. A total of 1100 1-day-old chicks were divided into four treatments: the “control” which were non-conditioned and non-supplemented; “heat-conditioned” which were exposed to 38 ± 1 °C for 24 h at 5 days of age; “vinegar supplemented” which were given drinking water supplemented with 0.2% of commercial vinegar from 28 to 49 days of age; and “combined” which were both heat conditioned and vinegar supplemented. All groups were exposed to the natural fluctuations of summer ambient temperature (average diurnal ambient temperature of about 30 ± 1 °C and average relative humidity of 58 ± 5%). ETC and broiler gender did not affect the respiratory rate or body temperature of chronic heat-exposed chickens. VS changed the body temperature across time (d35, d42, d49) (linear and quadratic effects, P < 0.05) without changing respiratory rate. Heat-conditioned chickens exhibited lower levels of glycemia (P < 0.0001) and higher hematocrit and red blood cell counts (P < 0.05). Furthermore, the greatest effects of VS, alone or associated with ETC, were the lowering of cholesterol and triglyceride blood concentrations. A significant (P < 0.05) effect of ETC, gender, and ETC×gender on T3:T4 ratio was observed. Finally, some beneficial physiological responses induced by ETC and VS, separately or in association, on chronically heat-stressed chickens were observed. However, the expected cumulative positive responses when the two treatments were combined were not evident. [less ▲]

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See detailTeneur en minéraux principaux de la viande cameline en Algérie
Sahraoui, Naima; Moula, Nassim ULiege; Boudjenah, Saliha et al

in Revue d'Élevage et de Médecine Vétérinaire des Pays Tropicaux (2018), 71((4)),

L’objectif de l’étude était de déterminer les concentrations en minéraux et en oligoéléments de la viande de dromadaire en Algérie. Des échantillons de viande de 32 dromadaires ont été recueillis. Les ... [more ▼]

L’objectif de l’étude était de déterminer les concentrations en minéraux et en oligoéléments de la viande de dromadaire en Algérie. Des échantillons de viande de 32 dromadaires ont été recueillis. Les dosages ont été réalisés par spectroscopie d’émission atomique. Les concentrations moyennes (± erreur type) en calcium et en phosphore ont été respectivement de 33,1 ± 6,1 et 655 ± 21,3 mg / 100 g. Les teneurs en oligoéléments ont été de 14 056 ± 831 μg / 100 g pour le zinc, 6100 ± 447 μg / 100 g pour le fer, et 1322 ± 43 μg / 100 g pour le cuivre. Le facteur race a eu un effet très significatif (p < 0,001) sur les teneurs en calcium et en sodium. Aucun effet significatif (p < 0,05) de l’âge n’a été observé sur les différents minéraux étudiés. La viande de dromadaire présente des teneurs en minéraux proches de celles des autres animaux de rente. [less ▲]

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See detailQ method to map the diversity of stakeholder viewpoints along agricultural innovation systems: A case study on cattle genetic improvement in Niger
Siddo, Seyni; Moula, Nassim ULiege; Hamadou, Issa ULiege et al

in Archiv für Tierzucht (2018), 61(1), 143-151

The complex balance between innovation and conservation regarding animal genetic resources makes it difficult to find mutually accepted improvement pathways between breeders, government agencies, and ... [more ▼]

The complex balance between innovation and conservation regarding animal genetic resources makes it difficult to find mutually accepted improvement pathways between breeders, government agencies, and research and education institutions. This study maps stakeholder viewpoints on cattle genetic improvement in Niger using the Q method. Fifty-three statements derived from expert opinions and focus group interviews were ranked by 22 respondents along a seven-grade scale expressing their degree of approval. The Q method reveals a limited consensus on development goals, overall strategy, and the present context of operation. Beyond this consensus, three discourses are identified that express distinct attitudes regarding the balance between conservation and progress, leading to distinct strategies. The first discourse fits with a modernist vision and government strategies established in the 2000s based on exotic crossbreeding and improved purebred Azawak. The second discourse lines up with the previous livestock development strategy of Niger (before 2000) based on indigenous breeds. The third discourse represents a conservationist vision, with minor importance in the present sampling. Tentative observations are proposed on the consequences of this divide in opinions on livestock policies in Niger, including extension. The Q method appears effective in identifying the concerns of stakeholders on complex agricultural innovation topics. As a sensing tool to follow-up policy implementation in similarly complex agricultural topics, the Q method may inform adaptive extension and education strategies. © Author(s) 2018. This work is distributed under the Creative Commons Attribution 4.0 License. [less ▲]

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See detailLa croissance du bovin Azawak au Niger : influence de facteurs de variation non génétiques et estimation des paramètres génétiques
Siddo, Seyni; Moula, Nassim ULiege; Hamadou, Issa et al

in Biotechnologie, Agronomie, Société et Environnement (2018), 22(2),

Description of the subject. The effects of both non-genetic factors and of genetic parameters on the growth traits of Azawak cattle in Niger were estimated from performance data collected on animals ... [more ▼]

Description of the subject. The effects of both non-genetic factors and of genetic parameters on the growth traits of Azawak cattle in Niger were estimated from performance data collected on animals raised in the Toukounous animal breeding station. Objectives. Following on from the results obtained, a model to predict breeding values of breeding stocks is to be developed. Method. The influence of non-genetic factors and of genetic parameters was estimated using a fixed effects linear model and a multi character animal model (REML), respectively. Results. Sex, season and year of birth, and their interactions had a significant effect (p <0.05) on weight from birth to 20 months and average daily gains from birth to 12 months (ADG12) and to 18 months (ADG18). Heritability was moderate for birth weight (0.20) and for weight at 12, 14 and 20 months (0.15 to 0.43), whereas it was higher for weight at 13 months (0.61), gradually as the interval between weighing increased. All genetic correlations were positive except those between ADG12 and weight at 17 months and between ADG12 and ADG18. Environmental correlations followed the same trends as genetic correlations. Conclusions. Heritability of weight and gains was moderate to high, indicating that an improvement in meat production could be obtained from selection according to growth performance. [less ▲]

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See detailAnalysing innovations among cattle smallholders to evaluate the adequacy of breeding programs.
Camara, Younouss ULiege; Moula, Nassim ULiege; Sow, F. et al

in Animal (2018)

Many breeding programs have been implemented in developing countries, many of which have been unsuccessful. To better understand the failure of these breeding programs, it is proposed to analyze their ... [more ▼]

Many breeding programs have been implemented in developing countries, many of which have been unsuccessful. To better understand the failure of these breeding programs, it is proposed to analyze their adequacy with innovations that are actually adopted by smallholders. The proposed methodology takes account of these innovations, the reasons for their adoption and the objectives of livestock keeping. The N'Dama cattle-breeding program in Senegal was used as a case study. Surveys were carried out among 54 farmers: 27 breeders who participated in this program, 17 of whom recently resigned, and 27 breeders who have never participated. Feeding was the most frequently cited area of innovation, followed by infrastructure. Genetics, animal health and reproduction held the third rank. Milk production appeared as an important objective of breeders, although the context remains one of strong multifunctionality. Principal component analysis highlighted three categories of breeders according to the innovations they adopted: institutional, modernizing, and integrating innovators. The groups of institutional and modernizing innovators dominate, gathering each 41% of the farmers. In the first category, breeders have organized themselves in an association and use N'Dama sires, livestock aiming at an insurance objective. In the second category, artificial insemination with exotic breeds and other technical innovations (cowshed, vaccination, urea treatment of straw) are used to improve production of milk and meat. The third group is termed 'integrating innovators,' since their innovations aim at integrating livestock and crop production. Gathering 18% of the sampled breeders, this group presents intermediate features between the two previous groups, using animals as draught power and for manure production. These results indicate that a process of intensification is at play and that the genetic improvement through the selection of N'Dama cattle for production criteria does not meet the breeders' demand. However, the N'Dama's adaptive traits justify its use as part of the breeding strategy of farmers, either in pure-breeding or in crossbreeding. The study thus tends to show the interactive link between genetic improvement and other innovations. It suggests that the success of a breeding program depends on its adequate positioning within the set of innovations adopted by breeders and proposes a method to inform breeding programs accordingly. [less ▲]

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