Département de Sciences Biologiques, Unité de Formation et de Recherche en Sciences de la Vie et de la Terre, Université Nazi BONI, 01 BP 1091 Bobo-Dioulasso 01, Burkina Faso
Sahelian livestock farming is faced with feeding problems, especially during the dry season. The aim of the study was to compare the effect of different rates of incorporation of Piliostigma thonningii pods, with or without the use of bamboo charcoal, on goat growth. This involved determining the chemical composition of the feed and assessing the impact of rations incorporating the pods on the weight gain of the goats. Chemical composition was determined using the FOSS DS2500F with the Global Feed Equation from the International Livestock Research Institute. Twenty-four goats of average age and live weight of 12.5 ± 5.5 months and 8.49 ± 1.33 kg, respectively, were fed a ration incorporating 20%, 40% and 60% of pods, respectively, in 6 batches. Batches 1, 2 and 3 received the ration without charcoal and batches 4, 5 and 6 with charcoal at a dose of 1g/kg PV. Bromatological analysis of the pods yielded contents of 91.5 and 8.69% DM for OM and MAT respectively, with a nitrogen digestibility of 45.51 g/kg DM. The trial yielded GMQs of 10.5±3.32, 18.59±7.97 and 18.43±6.93 g/d for batches 1, 2 and 3 respectively; lower than 17.54±5.55, 20.78±9.2 and 21.71±7.29 g/d for batches 4, 5 and 6, which had the highest DM intake (283.23±52.81, 240±35.04 and 315±50.9 g/d respectively). These results could be used in goat production improvement programmes.