Carcass morphometry of crossbred steers subjected to different nutritional strategies in the growing and finishing phases
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Data
2013-06
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Universidade Estadual de Maringá
Resumo
The present study aimed to evaluate the effects of different nutritional strategies in growing and
finishing phases on the carcass morphometry of 24 crossbred steers, ½ Holstein/Zebu, slaughtered at 15 months of age and 395.0kg live weight. In the growing phase, animals were maintained grazing on Brachiaria brizantha, receiving two levels of energy supplementation in quantities equivalent to 0.5 or 1.0% live weight. Then, animals were finished in feedlot receiving diets composed of 50 or 80% concentrate. The percentage of primary cuts was not influenced by feed levels in the growing and finish phases. The high supplementation level in the growing phase resulted in a higher (p < 0.05) carcass length (134.48 vs. 131.43 cm). The food levels did not influence the conformation of the carcasses, however the highest level in the growing and finishing phases resulted in a higher (p < 0.05) cushion thickness (23.46 vs 21.26 cm). It was found a significant interaction between feeding levels in the different phases for the leg length and arm perimeter with increase of 14.78 and 4.80%, respectively for animals given high energy levels in both phases. The high feeding level in the growing phase was more attractive owing the positive effects on some important measures of carcass, especially in the length.
Descrição
Palavras-chave
Arm perimeter, Conformation, Carcass length, Cushions thickness, Energy, Supplementation, Perímetro de braço, Conformação, Comprimento da carcaça, Espessura de coxão, Energia, Suplementação
Citação
REZENDE, Pedro Leonardo de Paula; RESTLE, João; PÁDUA, João Teodoro; FERNANDES, Juliano José de Resende; LINO, Fabíola Alves; GUIMARÃES, Tiago Pereira. Carcass morphometry of crossbred steers subjected to different nutritional strategies in the growing and finishing phases. Acta Scientiarum. Animal Sciences, Maringá, v. 35, n. 2, p. 187-192, Apr./June 2013.