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Effect of post-weaning growth rate on carcass traits and meat quality of Nellore cattle

2016; Elsevier BV; Volume: 123; Linguagem: Inglês

10.1016/j.meatsci.2016.10.005

1873-4138

L.H.P. Silva, Pedro Veiga Rodrigues Paulino, Gutierrez José de Freitas Assis, Débora E.F. Assis, Mauricio Estrada, Matheus C. Silva, Jaqueline C. Silva, Taiane da Silva Martins, Sebastião de Campos Valadares Filho, Mário Fonseca Paulino, M. L. Chizzotti,

Insect Utilization and Effects

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) 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.