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Title: Kinetic parameters of ruminal degradation of Marandu grass silage supplemented with brewer’s grain
Authors: FERREIRA, Daniele de Jesus
ZANINE, Anderson de Moura
SOUZA, Alexandre Lima de
NEGRÃO, Fagton M.
GERON, Luiz Juliano Valério
PARENTE, Henrique Nunes
Keywords: Byproduct
Forage conservation
Nutritive value
Issue Date: 2016
Publisher: Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
Citation: FERREIRA, D. J. et al. Kinetic parameters of ruminal degradation of Marandu grass silage supplemented with brewer’s grain. Cien. Inv. Agr., Santiago, v. 43, n. 1, p. 35-142, 2016. DOI: 10.4067/S0718-16202016000100012
Abstract: This study measured the kinetic parameters of the ruminal degradation of the silage of Brachiaria brizantha cv. Marandu. The experiment had a completely randomized design with five treatments and five repetitions; the treatments featured the inclusion of natural brewer’s grain to Marandu grass silage at levels of 0, 10, 20, 30 and 40%. The regression equation for the degradability of the soluble Fraction A of dry matter showed a linearly increasing pattern (P≤0.05) with an addition of 0.19% for each 1% of brewer’s grain included. The percentage of insoluble potentially degradable fraction (B) of dry matter was reduced linearly (P≤0.05). The ruminal degradation rate in the dry matter (c), expressed as % h-1, increased linearly (P≤0.05). The crude protein percentage in the Fraction B demonstrated a linear regression pattern as brewer’s grains were added (P<0.05), and there was a 0.06% reduction per unit of additive to Marandu grass silage. There was a linear increase in degradation rate c in the crude protein (P≤0.05) as the additive was included in the silage. A linear increase (P≤0.05) was observed for the regression of the potentially degradable fraction of NDF, represented by Fraction D. The inclusion of 20% of brewer’s grain to Marandu grass silage resulted in an improvement in the kinetic parameters of ruminal degradation.
ISSN: 0718-1620
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