Effect of post-weaning growth rate on carcass traits and meat quality of Nellore cattle
| Autor: | Sebastião de Campos Valadares Filho, Jaqueline C. Silva, L.H.P. Silva, Mário Fonseca Paulino, Matheus Custódio da Silva, Pedro Veiga Rodrigues Paulino, T. S. Martins, M. M. Estrada, Gutierrez J.F. Assis, Mario Luiz Chizzotti, Débora E.F. Assis |
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| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Male Nellore cattle Color Compensatory gain Weaning Biology Sarcomere length 03 medical and health sciences Animal science Myofibrils Myofibrillar fragmentation index Food Quality Animals Growth rate Muscle Skeletal Meat tenderness 0402 animal and dairy science 04 agricultural and veterinary sciences 040201 dairy & animal science Animal Feed Dietary Fats Diet Red Meat 030104 developmental biology Phenotype Adipose Tissue Animals Newborn Taste Post weaning Cattle Collagen Abattoirs Food Science |
| Zdroj: | LOCUS Repositório Institucional da UFV Universidade Federal de Viçosa (UFV) instacron:UFV |
| ISSN: | 1873-4138 |
| Popis: | This study evaluated the effects of growth rate during post-weaning growing phase on carcass traits and beef quality. Thirty-four Nellore young bulls were randomly assigned to one of three treatments: LOW, MEDIUM or HIGH growth rate during post-weaning growing phase followed by high growth rate in the finishing phase. The growth rate affected (P < 0.05) all carcass traits evaluated at the end of post-weaning growing phase, except ultimate pH. Carcass dressing was greatest (P < 0.05) for the HIGH growth rate group in both phases. Beef from the HIGH group exhibited the greatest (P < 0.05) sarcomere length and a* and b* colour values at the end of post-weaning growing phase. However, post-weaning growth rate did not affected (P > 0.05) collagen content and solubility, myofibrillar fragmentation index and Warner-Bratzler shear force. Our data suggest that a low post-weaning growth rate produces lighter and leaner carcasses, but it does not affect meat quality traits in Nellore young bulls. |
| Databáze: | OpenAIRE |
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