Methanolic extract of Urochloa humidicola on in vitro rumen fermentation

Abstract: The objective of this work was to evaluate the effect of the addition of the methanolic extract of Urochloa humidicola at four different concentrations (0, 75, 150, and 250 g L-1) on the in vitro rumen fermentation of Urochloa brizantha. The following variables were evaluated by the in vitro gas production technique: kinetic parameters; rumen degradation of dry matter; and production and concentration of the methane and carbon dioxide gases and of the acetate, propionate, and butyrate short-chain fatty acids. The addition of the methanolic extract reduces the production of gases generated from the degradation of non-fibrous carbohydrates (fraction A) in 9.55, 6.67, and 13.33%, respectively, at the concentrations of 75, 150, and 250 g L-1, compared with the control group, but it negatively affects the degradation of the dry matter of U. brizantha at the concentrations of 150 and 250 g L-1. The extract shows negative quadratic effect on gas production during 12 and 24 hours of U. brizantha incubation. The extract of U. humidicola reduces methane production and increases short-chain fatty acid production at the concentrations of 75, 150, and 250 g L-1.

Bibliographic Details

Main Authors:	Freitas,Rafaela Scalise Xavier de, Nepomuceno,Delci de Deus, Modesto,Elisa Cristina, Pereira,Tatiana Pires, Almeida,João Carlos de Carvalho, Morais,Leonardo Fiusa de, Pereira,Luiz Gustavo Ribeiro, Machado,Fernanda Samarini, Campos,Mariana Magalhaes, Tomich,Thierry Ribeiro
Format:	Digital revista
Language:	English
Published:	Embrapa Secretaria de Pesquisa e Desenvolvimento 2018
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000400504
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