Gnanda B. Isidore, Kabore Adama, Kimse Moussa, Zoundi S. Jean et Nianogo J. Aim̮̩
Thirty-two dairy goats were randomly divided into two groups of 16 individuals. The first group was fed completely trough (intensive production system, SI), while the second group was supplemented with 50% of the needs of animals in dry matter (DM), energy and nitrogen (semi-intensive system of production, SS). The ration was composed using cottonseed (37%), local bran (33%), cowpea haulms (12.5%) and sorghum straw (17.5%). All animals received ad libitum supplement using multinutrionnel block made with local resources containing 25% of its local, 20% of iodized salt, 20% of limestone, 10% of Acacia raddiana pods, 10 % of cowpea pods, 10% of cement and 5% of bone powder). Goats in SS were followed for pasture to observe the types of fodder consumed and to value the frequencies of their use. Withdrawals of samples were taken on these forages to assess the overall quality of course frequented by animals. Milk production was obtained by trafficking from oxytocin injections. The results show that the leaves of wood accounted for the largest share of fodder collected by goats on rangelands (58% forage grazed). Results on forage quality are as follows: 145 g / kg DM (CP), 3.3 g / kg DM (phosphorus) 9.9 ppm (copper), 23.9 ppm (zinc) and 78 3 ppm (manganese). The production system had a significant effect (P <0.05) on milk production. Goats in SS produced 1413 g / d of milk against 1069 g / d for those subject to the SI. The highest average daily gain (ADG) (P <0.05) was obtained with kids whose mothers were taken to pasture: 41.3 g to 36.2 g against kids whose mothers were fed completely trough.
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