Journal of Animal Science and Veterinary Medicine

This study is designed to evaluate the proximate composition, fibre fractions, mineral assay and phytochemical properties of soybean milk residue for livestock and was carried out in the Science Laboratory and the Teaching and Research Farm of Federal Polytechnic, Bali B ward, Bali Local Government Area (LGA) of Taraba state, Nigeria. Air-dried soybean milk residue was crushed and a subsample taken to the laboratory for analyses. The soybean milk was also used to formulate diets having varying levels of its inclusion as replacement for soybean meal. These diets were fed to the bucks for a period of 90 days. During the last 7 days, feacal samples were collected and analyzed before calculating the nutrient intake. Results were presented using simple tables. Analysis carried out showed that soybean milk residue contains 89.53% dry matter, 10.47% moisture, 5.13% ash, 32.19% crude protein, 5.46% ether extract and 4.78% crude fibre. Fibre fractions were 31.97% nitrogen free extract, 10.63% acid detergent fibre, 21.51% neutral detergent fibre, 2.00% acid detergent lignin, 8.28% cellulose and 10.89% hemicellulose. Metabolizable energy was 3138.22 Kcal/kg. The mineral profile of soybean milk residue indicates 2.11% potassium, 0.28% calcium, 0.62% phosphorus, 0.27% magnesium, 0.17 ppm sodium, 155.22 ppm iron, 38.72 ppm manganese and 55.17 ppm zinc. Phytochemicals found in the soybean milk residue were phenolic (0.12%), saponins (0.18%), phytate (0.34%), tannins (0.03%), lectins (0.05%), oxalates (0.27%), alkaloids (0.01%) and flavonoids (55.17%). In the second experiment, 25 weaned bucks weighing 8.40 kg were used to evaluate the nutrient intake of diets (T₀, T₂₅, T₅₀, T₇₅ and T₁₀₀) formulated with varying levels of soybean milk residue as a replacement for soybean meal. Total crude protein intake increased across the treatments with T1 (55.46 g) and T5 (59.63 g) having the least and highest value respectively. Higher values were recorded in total dry matter intake was higher for T3 (358.00g), total crude protein intake for T5 (59.63g), total ether extract intake for T5 (7.97g), total crude fibre intake for T1 (58.55g) and total nitrogen free extract intake for T3 (182.82g). Total crude fibre intake and total ether extracts intake were significantly affected (p<0.05) by the dietary treatments while total dry matter intake, total crude protein intake and total nitrogen free extract intake were not. It was concluded that soybean milk residue contains a good nutrient profile in quantities that are required for goats. T₅₀ and T₁₀₀ supplementation gave good nutrient intake.