| Literature DB >> 27750086 |
Luiz H P Silva1, Pedro V R Paulino2, Gutierrez J F Assis3, Debora E F Assis3, Mauricio M Estrada3, Matheus C Silva3, Jaqueline C Silva3, Taiane S Martins3, Sebastião C Valadares Filho3, Mário F Paulino3, Mario L Chizzotti3.
Abstract
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. Copyright ÂEntities:
Keywords: Compensatory gain; Meat tenderness; Myofibrillar fragmentation index; Sarcomere length
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Year: 2016 PMID： 27750086 DOI： 10.1016/j.meatsci.2016.10.005
Source DB: PubMed Journal: Meat Sci ISSN： 0309-1740 Impact factor: 5.209