RESUMO.O objetivo deste trabalho foi avaliar os efeitos de inoculantes bacterianos e/ou enzimáticos sobre a degradabilidade ruminal da silagem de milho. Foi utilizada a técnica in situ, em quatro bovinos adultos, distribuídos em quadrado latino 4x4. O s tratamentos avaliados foram: SC (silagem controle), SIB (silagem com inoculante bacteriano), SIBE (silagem com inoculante bacteriano e enzimático) e SIE (silagem com inoculante enzimático). Não houve diferença entre tratamentos nas frações solúvel (a), potencialmente degradável (b), taxa de degradação da fração b (c), degradabilidade potencial (DP) e degradabilidade efetiva (DE) da MS e MO. A DE da PB foi maior para o tratamento SIE (63,13%) e menor para o tratamento SIBE (53,69%). A fração b da FDN apresentou maior valor para SIBE (74,13%) e menor para SIB (64,07%). O resíduo indigerido (I) da FDN não diferiu entre os tratamentos. As frações b e I e a taxa c da FDA não diferiram entre os tratamentos.Palavras-chave: degradação, fibra, matéria orgânica, matéria seca, proteína bruta.ABSTRACT. In situ degradability of corn silages prepared with bacterial and/or enzymatic inoculants. The objective of this work was to evaluate the effects of the bacterial and/or enzymatic inoculants on corn silage degradation. The in situ technique was used in four adult steers in a 4x4 latin square design. The evaluated treatments were: CS (control silage), SBI (silage with bacterial inoculant), SBEI (silage with bacterial a nd enzymatic inoculant) and SEI (silage with enzymatic inoculant). There was no difference among treatments i n soluble fraction (a), potential degradable fraction (b), fraction b rate of degradation (c), potential degradability (PD) and effective degradability (ED) of DM and OM. The ED of CP was higher in SEI treatment (63.13%) and lower in SBEI treatment (53.69%). The b fraction of NDF was higher for SBEI (74.13%) and lower for SBI (64.07%). The NDF indigestible residue (I) did not show any difference among treatments. The ADF b and I fraction and the c rate values did not show any difference among treatments.
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