Use este identificador para citar ou linkar para este item: http://repositorio.bc.ufg.br/handle/ri/13071
Tipo do documento: Artigo
Título: Rumen fermentation and rumen microbes in nellore steers receiving diets with different lipid contents
Autor: Messana, Juliana Duarte
Berchielli, Telma Teresinha
Arcuri, Pedro Braga
Reis, Ricardo Andrade
Canesin, Roberta Carrilho
Ribeiro, Andressa Ferreira
Fiorentini, Giovani
Fernandes, Juliano José de Resende
Resumo: The objective of the present study was to evaluate the effects of dietary lipid content (20, 40 and 60 g/kg dry matter) on intake, total and ruminal apparent digestibility of dry matter (DM), nutrient digestibility, rumen fermentation parameters, microbial synthesis efficiency and rumen microbial content of beef cattle. Nine cannulated steers at 6 months of age with initial body weight of 232±35 kg were used in a triplicate 3 × 3 Latin square design. The results indicated that the total intake and digestibility of DM, organic matter (OM), gross energy (GE), neutral detergent fiber (NDF) and acid detergent fiber (ADF) were not affected by the lipid content of the diet. However, the lowest lipid content diet reduced the total digestibility of crude protein (CP) and total carbohydrate linearly compared with the highest lipid diet. In contrast, when steers were fed a diet containing 20 g lipids/kg of DM, the concentration of ammonia in the rumen decreased quadratically relative to the other diets. Ruminal pH was not affected by the interaction of treatment and sampling time; however, the rumen pH decreased quadratically in animals that received the highest dietary lipid content (60 g/kg) compared with animals that received 20 and 40 g lipids/kg of DM. The rumen concentrations of volatile fatty acids, propionate, and butyrate and the acetate/propionate ratio were affected by the dietary lipid content. However, the microbial population, microbial N flow, and efficiency of synthesis were not affected by dietary lipid content. Overall, an increase in the lipid content of the diet of Nellore steers resulted in similar digestive profiles and fermentation conditions.
Palavras-chave: Bovines
Digestibility
Dat
Soybean
Volatile fatty acids
País: Brasil
Unidade acadêmica: Escola de Veterinária e Zootecnia - EVZ (RG)
Citação: MESSANA, Juliana Duarte; BERCHIELLI, Telma Teresinha; ARCURI, Pedro Braga; REIS, Ricardo Andrade; CANESIN, Roberta Carrilho; RIBEIRO, Andressa Ferreira; FIORENTINI, Giovani; FERNANDES, Juliano José de Resende. Rumen fermentation and rumen microbes in nellore steers receiving diets with different lipid contentes. Revista Brasileira de Zootecnia, Viçosa, v. 42, n. 3, p. 204-212, 2013.
Tipo de acesso: Acesso Aberto
Identificador do documento: 10.1590/S1516-35982013000300008
Identificador do documento: 10.1590/S1516-35982013000300008
URI: http://repositorio.bc.ufg.br/handle/ri/13071
Data de publicação: 2013
Aparece nas coleções:EVZ - Artigos publicados em periódicos

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