Intake, apparent digestibility, and methane emission in bulls receiving a feed supplement of monensin, virginiamycin, or a combination.

• Autor(a) principal: FONSECA, M. P. da
• Data de Publicação: 2015
• Outros Autores: BORGES, A. L. da C. C., SILVA, R. R. e, LAGE, H. F., FERREIRA, A. L., LOPES, F. C. F., PANCOTI, C. G., RODRIGUES, J. A. S.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
• Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1049316; http://dx.doi.org/10.1071/AN14742
• topic: Feed supplement; Greenhouse gas; Respirometric chamber; additives; cattle

The aim of this study was to evaluate the effects of the feed supplements monensin, virginiamycin, or a combination of the two, on intake, digestibility, and methane emission in the male cattle breed F1 Holstein· Gir. We used acomplete randomised design with four treatments consisting of the control, monensin, virginiamycin, and a combination of the two. The basal diets were composed of sorghum silage with Tanzania grass and the concentrate in the 1 : 1 ratio. Nutrient intake (P>0.05) and the apparent digestibility coefficients (P>0.05) were not affected by the supplementation with monensin, virginiamycin, or both. The combination of the supplements did affect methane emission (P<0.05) when expressed in L/day, L/(kg DM), and L/(kg DM digestible). The lowest methane production was obtained with the combination of the supplements.