Composição bromatológica de silagem de BRS Capiaçu aos 120 dias de corte sem e com aditivos farelados

Abstract

This study aimed to evaluate the bromatological composition of capiaçu silage, at 120 days of regrowth. The experimental design was completely randomized, with three treatments and five replicates: T1 - capiaçu silage (control); T2 - capiaçu silage + wheat bran (15% in natural matter); T3 - capiaçu silage + soybean meal (15% in natural matter). The variables analyzed were: dry matter content (DM), dry matter contents of crude protein (CP); neutral detergent fiber (NDF); acid detergent fiber (ADF) and total digestible nutrients (TDN). DM of 21.16% was observed in the control, lower than the 28.94% in the treatment with wheat bran and 27.28% in the treatment with soybean meal (P<0.05). Silage with soybean meal showed higher CP, 12.18%, followed by treatment with wheat bran, with 7.50%, and the control obtained 5.83%, lower than the others (P<0.05). The control showed higher NDF, 77.10%, followed by treatment with wheat bran, with 62.71%, higher than the treatment with soybean meal, 54.06%. The ADF of the control was higher, 55.79%, while treatments with wheat and soybean bran showed significant reductions, registering 41.76% and 39.16%, respectively (P<0.05). Silage with soybean meal achieved higher TDN, 52.42%, similar to the treatment with wheat bran, 50.96%, higher than the control, 43.05%. Wheat and soybean bran, added at a level of 15% in natural matter to mature BRS Capiaçu elephant grass silage, improves its bromatological composition, with the potential to provide satisfactory zootechnical indexes to the herd