期刊
MEAT SCIENCE
卷 100, 期 -, 页码 150-155出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.meatsci.2014.09.143
关键词
VRTN; NR6A1; Loin; Quality; Genes
资金
- Diputacion General de Aragon to Pascual Lopez-Buesa [INNOVA-A1-091/13, FITE 2012/2013]
- Diputacion General de Aragon
- La Caixa Foundation
A SNP (748 C > T) in the NR6A1 gene and an insertion (g.20311_20312ins291) in the VRTN gene have been shown to affect vertebrae number in the pig. The allelic frequencies of both genes were investigated in six western breeds and the effects of the VRTN insertion on some phenotypic traits in a Duroc x Landrace/Large White cross. The NR6A1 c. 748T allele, associated with higher number of vertebrae, appeared to be fixed in most studied breeds except in Iberians. The VRTN insertion (Ins allele) shows ample variability in all studied breeds although the allelic frequency of Ins seems to be larger in breeds with a greater history of genetic selection. Ins is associated with an increase in weight at slaughter, in loin and rib primal cut proportions, and with modified meat quality properties such as cooking loss, intramuscular fat content or yield after curing. We discuss the usefulness of both gene markers for pig selection. (C) 2014 Elsevier Ltd. All rights reserved.
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