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Provedor de dados:  R. Bras. Zootec.
País:  Brazil
Título:  Performance of finishing steers fed different sources of carbohydrates
Autores:  Freitas,Leandro da Silva
Brondani,Ivan Luiz
Segabinazzi,Luciane Rumpel
Alves Filho,Dari Celestino
Pizzuti,Luiz Angelo Damian
Silva,Viviane Santos da
Rodrigues,Leonel da Silva
Data:  2013-05-01
Ano:  2013
Palavras-chave:  Corn
Soybean hulls
Wheat bran
Weight gain
Resumo:  The objective of this study was to evaluate the effect of carbohydrate sources (corn, soybean hulls or wheat bran) in the diet on performance of feedlot steers in the finishing phase. Twenty-four Charolais × Nellore crossbred steers, aged 22 months and initial weight of 335.0±10.9 kg were used in the experiment. Diets contained 40% sorghum silage and 60% concentrate. The intakes of dry matter (DM; 10.68, 10.16 and 10.34 kg/day) and crude protein (1.66, 1.70 and 1.72 kg/day) were not affected by diets with corn, soybean hulls or wheat bran, respectively. The intakes of neutral and acid detergent fiber were higher for soybean hulls, but the diet containing corn provided higher intake of non-fibrous carbohydrates, total digestible nutrients and digestible energy. Weight gain was higher and better feed conversion for animals fed corn (1.57 kg/day, 6.85 kg DM/kg gain) or soybean hulls (1.58 kg/day and 6.61 kg DM/kg gain) compared with steers receiving wheat bran (1.29 kg/day and 8.14 kg DM/kg gain) in the diet. There was no significant effect of carbohydrate sources on the final body score (3.78 points), energy conversion (28.25 Mcal digestible energy/kg gain), hot carcass yield (57.63 kg/100 kg BW) and fat thickness (3.1 mm). From an economic point of view, soybean hulls can be an alternative source of carbohydrate to corn in diets of finishing steers with 60% concentrate.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  Sociedade Brasileira de Zootecnia
Relação:  10.1590/S1516-35982013000500008
Formato:  text/html
Fonte:  Revista Brasileira de Zootecnia v.42 n.5 2013
Direitos:  info:eu-repo/semantics/openAccess

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