Association analysis of NARS2 gene variation and carcass and meat quality traits in selenium black pig

doi:10.14088/j.cnki.issn0439-8114.2023.12.034

Abstract

Abstract: A g.101284 C>T mutation site was found in intron 9 of the NARS2 gene in the selenium black pig population. After genotyping using PCR product direct sequencing, association analysis was conducted with 23 phenotypes of carcass and meat quality traits.The results showed that the g.101284 C>T locus of the NASR2 gene significantly affected the skin thickness of pig carcasses （P<0.01）, and significantly affected the eye muscle area, drip loss for 48 hours, and intramuscular fat content traits of pork （P<0.05）. The skin thickness of individuals with CC genotype was significantly lower than that of individuals with TT genotype （P<0.01）;the 48 hours drip loss and intramuscular fat content of individuals with CC genotype were significantly higher than those with other genotypes, while the carcass eye muscle area of individuals with TT genotype was significantly smaller than that of individuals with other genotypes （P<0.05）. Among these four personality traits, there was a certain degree of correlation between other traits except for skin thickness and eye muscle area traits, which were not significantly correlated. Among them, the 48 hours drip loss had the highest correlation with intramuscular fat content traits （r²=0.882, P<0.01）. Therefore, this marker should be reasonably utilized in breeding applications in conjunction with breeding objectives, and individuals of different genotypes should be selected or eliminated for different main selected traits.

Key words: selenium black pig, carcass traits, meat quality traits, NARS2 gene, association analysis

CLC Number:

S828
S813

QIAO Tong-tong, ZHANG Yu, LI Zi-peng, QIAO Mu, QIN Zhen-yang, PENG Xian-wen, WU Jun-jing. Association analysis of NARS2 gene variation and carcass and meat quality traits in selenium black pig[J]. HUBEI AGRICULTURAL SCIENCES, 2023, 62(12): 195-199.

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