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La présente étude se propose d’évaluer l’impact des parasites gastro-intestinaux sur la croissance pondérale et la production laitière des ovins Djallonké d’une part, d’autre part de mesurer l’influence des parasites gastro-intestinaux sur la prolactine. Pour ce fait, dans un premier essai, deux lots de brebis sont constitués après une infestation naturelle suivant le degré d’infestation après une coproscopie quantitative (les plus parasités et les moins parasités). Dans un deuxième essai, deux lots d’agneaux ont été constitués (1 lot d’agneaux déparasités et 1 lot d’agneaux non déparasités). Un contrôle de la charge parasitaire est fait aussi bien chez les brebis que chez les agneaux. Le poids vif des brebis et celui des agneaux, la production laitière journalière sont des paramètres zootechniques mesurés. Le taux de prolactine dans le sang des brebis est aussi mesuré. Les résultats des travaux révèlent que les parasites gastro-intestinaux influencent la variation du poids vif des brebis gestantes et le poids vif à la naissance des agneaux. Egalement la production laitière des brebis et la croissance avant sevrage des agneaux sont influencées par les parasites gastro-intestinaux. Contrairement aux performances zootechniques, la prolactine n’est pas influencée par l’infestation des brebis par les parasites gastro-intestinaux.Mots clés: Parasites, production laitière, croissance pondérale, brebis, agneaux,Djallonké, BéninEnglish Title: Effect of natural infestation with gastrointestinal nematodes on zootechnic performance and secretion of djallonke ovine prolactinEnglish AbstractThe aim of this study is to evaluate the impact of gastrointestinal parasites on the weight growth and milk production of Djallonké sheep on the one hand, and to measure the influence of gastrointestinal parasites on prolactin. For this purpose, in a first trial, two batches of ewes are constituted after a natural infestation according to the degree of infestation after quantitative coproscopy (the most parasitized and the least parasitized). In a second trial, two lots of lambs were bred (1 lot of de-shedded lambs and 1 lot of lambs). Parasite load control is done in sheep as well as in lambs. Live weight of ewes and lambs, daily milk production are measured zootechnical parameters. The level of prolactin in the blood of ewes is also measured. The results show that gastrointestinal parasites influence the change in live weight of pregnant ewes and birth weight of lambs. Also the milk production of ewes and growth before weaning of lambs are influenced by gastrointestinal parasites. In contrast to zootechnical performance, prolactin is not influenced by ewe infestation by gastrointestinal parasites.Keywords: Parasites, milk production, weight gain, ewes, lambs, Djallonke, Republic of Benin

This study evaluated the effects of two levels of supplementation of dried leaves of C procera on sorghum straw ingestion and weight evolution of sheep Mossi breed in Burkina Faso To this end sheep Mossi breed weighing an average of kg were divided into three groups of five animals and subjected to three diets during days in dry season April May Group A control received finely chopped sorghum straw while groups B and C received g and g of C procera dried leaves in addition to the sorghum straw The forages distributed contained of raw salt Mean ingestion rates for sorghum straw were and for lots A B and C respectively The average daily gains ADG obtained were g and g for the animals of groups B and C respectively against g for those of group A These results suggest the possibility of valorizing C procera dried leaves in the rations of sheep in farming area as strategic supplementation to ensure better production in the dry season

International audience; In Burkina Faso, rural livestock farmers in arid and semi-arid areas rely heavily on woody plant resources such as Acacia nilotica and Acacia raddiana to satisfy the needs of small ruminant rearing. The assessment of the availability and the use of these two species are therefore essential to better manage them sustainably for their preservation. The survey carried out in the area showed that the questioned farmers exploited the leaves and pods of the two Acacia for the needs of the ruminants. 100% of the farmers exploit A. raddiana only for the feeding of small ruminants. However, A. nilotica was exploited for animal feed and health. The most commonly reported treatments are Foot and Mouth Disease (98.7%) followed by diarrhea (73.7%) and foot wounds (51.2%). In order to compare the results of the survey, a botanical inventory was carried out in the area and the results showed that A. raddiana is more available compared to A. nilotica. Also, other local species such as Faidherbia albida, Acacia senegal, Balanites aegyptiaca and Acacia siberiana are also exploited for the needs of small ruminant rearing in the study area. The most important constraints were excessive cutting, drought and overexploitation that negatively impact their survival. Data on these constraints provide the basis for a campaign to raise awareness among herders' communities to preserve these plants to sustainably improve the productivity of small ruminants and consequently farmer’s income.