EVALUATION OF THE PHYSICOCHEMICAL QUALITY OF MILK FROM DJALLONKE GOATS FED SILAGE MADE FROM PENNISETUM PEDICELLATUM TRIN IN BURKINA FASO

In order to assess the physical and chemical quality of milk from goats fed a diet of silage made from Pennisetum pedicellatum Trin, the second most common grass in Burkina Faso, the study compared four diets, two feeding practices, diet A (natural grazing) and diet B (natural grazing + corn bran), and two diets, C (silage + corn bran + peanut husks) and D (silage + corn bran), based on silage made from this grass. In a Latin square design with four experimental units or lots, the factors were the type of diet and the distribution of the goats into twelve (12) goats, with three (3) per lot. The bromatological values of samples of the pre-wilted and ensiled grass were analyzed. The amount of feed refused for diets A and B and the average ash, dry matter, fat, protein, and lactose content of the milk were determined for each batch. Analysis of the variance of the results using R revealed that pre-wilted Pennisetum pedicellatum Trin silage resulted in losses in nitrogen (-4%), total nitrogen (-20%) and digestibility (-12%). Feed conversion of the silage is better without weight gain with diet C. Unlike diet D, diet C reduces the fat and lactose content of milk obtained with diets A and B. The addition of additives to Pennisetum pedicellatum silage in barrels is essential to improve the nitrogen content of this forage grass for feeding Djallonke dairy goats.