Estudo da influência de touro e de genearca da raça Nelore nos aspectos quantitativos e qualitativos de carcaça e da carne / Study of the influence of steer and breeders of Nellore in the quality and quantitative aspects of carcass and beef

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

The present study had as objective to estimate the genetic variability between steers and breed lines of Nellore, these represented by the greatest breeders, referred to carcass and beef quality. The animals used to collect the samples of carcass and beef belonged to the project of genetic improvement and evaluation to emission of CEIP-Special Certificate of Identification and Production of CFM Farm-Ltda. The animals had age between 21 and 28 months. Were analyzed the characteristics of hot carcass weight (PCQ), rib eye area (AOL), backfat thickness (EGS), marbling (MAR).The beef quality was evaluated for the periods of 7, 14 and 21 days of ageing, as reference the drip loss (PE), cooking loss (PC) and tenderness (MAC). The evaluation of the genetic variability between the breed lines was done based in the values of the expected progeny differences (DEP) of the characteristics of PCQ, AOL, EGS, MAR and MAC at days 7, 14 and 21 of ageing. There was found a variability between steers and the breed lines studied, suggesting that a genetic process may be possible by selecting the animals to carcass and beef characteristics in the Nellore breed.

ASSUNTO(S)

carcass dep breeders carcaça qualidade de carne warner bratzler shear force beef quality epd warner bratzler shear force genearcas

ACESSO AO ARTIGO

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