Título:	Methane emissions and estimates of ruminal fermentation parameters in beef cattle fed different dietary concentrate levels.
Autoria:	PEDREIRA, M. dos S. OLIVEIRA, S. G. de PRIMAVESI, O. LIMA, M. A. de FRIGHETTO, R. T. S. BERCHIELLI, T. T.
Afiliação:	MÁRCIO DOS SANTOS PEDREIRA, UESB; SIMONE GISELE DE OLIVEIRA, UFPR; ODO PRIMAVESI; MAGDA APARECIDA DE LIMA, CNPMA; ROSA TOYOKO SHIRAISHI FRIGHETTO, CNPMA; TELMA TERESINHA BERCHIELLI, FCAV-UNESP.
Ano de publicação:	2013
Referência:	Revista Brasileira de Zootecnia, Viçosa, v. 42, n. 1 , p. 592-598, 2013.
Conteúdo:	Abstract: Using sorghum silage, the effect of roughage/concentrate ratios was evaluated on nutrient intake, digestibility, ruminal parameters and methane production by beef cattle. Three treatments (0, 30 and 60% of concentrate in DM of the diet) were distributed in three Latin squares, with nine animals and three periods. Dry matter intake increased as the grain concentration in diet increased; pH showed opposite behavior. Methane emissions were lower for animals fed the diet exclusively with sorghum silage as compared with those fed 30% of concentrate, but was similar to that of animals receiving 60% of concentrate. Losses of ingested gross energy as methane were reduced by 33% when grain concentration was increased in the diet. Concentrations of propionic and butyric acids were greater in diets with grain concentrate; acetic acid concentration was not affected. Concentrate in diet increases available energy for the metabolism, measured by lower losses of ingested gross energy as ruminal methane.
Thesagro:	Metano Gado de corte Efeito estufa Nutrição animal Sorgo
NAL Thesaurus:	Greenhouse gases Rumen fermentation Nutritive value Sulfur hexafluoride
Palavras-chave:	SF6
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPMA)