Utilização de aditivos sobre a composição química da forragem conservada de cultivar capim-elefante BRS capiaçu em três idades de corte

Abstract

The objective of this study was to evaluate the effects of a bacterial inoculant and addition of wheat bran on elephant grass silage BRS Capiaçu at three cutting ages, by chemical-bromatological and fermentative composition. It was used a completely randomized design with factorial arrangement, with eighteen treatments: elephant grass silage (SCE), silage with bacterial inoculant (SCE + I), silage with 6% wheat bran (SCE + FT), silages inoculated and mixed with 6% wheat bran (SCE + I + FT); at three cutting ages (70, 90 and 110 days). The variables were analyzed pH, N-ammoniacal, dry matter, mineral matter, crude protein, neutral detergent fiber, acid detergent fiber, hemicellulose, acid detergent lignin, nitrogen soluble in neutral detergent, nitrogen insoluble in acid detergent and ethereal extract in the silages. For the values of pH and ammoniacal nitrogen, there was a significant difference (P< 0,05) for all treatments at the three cutting ages and the additives. Regarding the chemical-bromatological variables, significant differences (P< 0,05) were observed between treatments, except for HEMI. The inclusion of wheat bran and wheat bran with inoculant in the elephant grass silage favoured the fermentation and improved the nutritive value of the silages.