Comportamento fermentado da silagem de BRS capiaçu (Cenchrus Purpureus (Shumacher.) Morrone) com alimentos concentrados

Abstract

The present work sought to evaluate the effect of including concentrated feed as additives to BRS capiaçu (Pennisetum purpureum Schum.) silage without pre-wilting, on the fermentative dynamics of the silage. The experimental design was completely randomized, with three treatments and five replications. There was an effect of the additives wheat bran and soybean bran on the DM of the silage, increasing it from 24.37% in the control, to 32.19 and 33.89%, respectively (P≤0.05). No significant difference was observed regarding the pH values ​​of the silage in the control and with the wheat bran additive (P>0.05), 3.8 and 3.7, respectively, but the soybean bran additive presented a pH of 4.02., superior to other treatments (P≤0.05). Effluent production was reduced from 9.48 to 6.28 and 3.42 kg.t-1, by the addition of wheat bran and soybean bran, respectively (P≤0.05). Regarding gas losses, significant differences were observed between the control treatment and the one added with soybean meal of 0.25 and 0.39% respectively. The treatment with wheat bran showed a result of 0.31%, similar to the other treatments (P>0.05). The BRS capiaçu silage, made after 120 days and without pre-wilting, has adequate fermentative characteristics, with and without the additives wheat bran and soybean bran (15% in natural matter).