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KMID : 1025520070490050569
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Journal of Animal Science and Technology
2007 Volume.49 No. 5 p.569 ~ p.576
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Effects of a Porcine MC4R Polymorphism (892G>A) on Carcass Traits in Commercial Pigs
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Han Sang-Hyun
Lee Sung-Soo
Ko Moon-Suck
Seong Pil-Nam
Park Beom-Young
Cho In-Cheol
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Abstract
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receptor(MC4R) gene and carcass traits was examined in randomly selected commercial pigs. A porcine MC4R gene was genotyped for Asp298Asn(nt. 892G>A) by polymerase chain reaction-restriction fragment length polymorphism(PCR-RFLP). A total of three genotypes, A/A, A/G, and G/G, were found with 28.8, 22.8, and 48.4% frequencies, respectively. In the whole population, pigs containing 892A/- showed significantly higher marbling score than those of homozygotes G/G(P<0.05). Two homozygotes, A/A and G/G showed lower in meat color score but higher in water holding capacity than those of heterozygotes A/G(P<0.01). However, the carcass weight of the barrows containing wild type -/G was significantly higher(i.e. more than 2.5kg) than those of homozygotes A/A(P<0.05). The effects of each genotype on carcass traits in the gilts were similar to those of the whole population, but not in barrows, suggesting an unknown sex-related effect on carcass traits. This study suggested that the genotype MC4R A/- could improve the meat quality in the commercial pig production. However, since the genetic polymorphism of MC4R gene differentially affected the carcass traits in sex-related manner, therefore, both parameters, the sex and genotype, should be considered for marker-assisted selection in commercial pig production.
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KEYWORD
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Association, MC4R, Genotype, Mutation, Sex-related manner, Pig
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