A genome-wide association study of five meat quality traits in Yorkshire pigs

2014年第1卷第2期

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《农业科学与工程前沿（英文）》 >> 2014年第1卷第2期 doi: 10.15302/J-FASE-2014014

A genome-wide association study of five meat quality traits in Yorkshire pigs

Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education of China, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China

发布日期： 2014-10-10

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摘要

Meat quality is an important trait in the pig industry. To identify genomic regions and haplotype blocks responsible for meat quality traits in pigs, a genome-wide association study was conducted for five traits including intramuscular fat content, pH at 45 min and 24 h, drip loss within 24 h and water-holding capacity in 231 Yorkshire barrows using illumina porcine 60k SNP chips. The results showed that a total of 344 single nucleotide polymorphisms (SNP) were significantly associated with five meat quality traits ( <1×10 ). Moreover, 323 SNPs were within the reported QTL regions, of which 21 were novel. Also, 158 SNPs fell into the proximal region of meat quality related genes. In addition, 25 haplotype blocks based on 116 SNPs were revealed with SNP combination patterns for five traits. Our study added new SNP information for identification of meat quality traits in pigs and will help elucidate the mechanisms of meat quality in pigs.

关键词

Pig ; GWAS ; meat quality trait ; SNP