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KMID : 1024620070270030382
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Food Science of Animal Resources
2007 Volume.27 No. 3 p.382 ~ p.386
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The Association between A-FABP Promoter Genotype and Carcass Traits in Pigs
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Han Sang-Hyun
Cho In-Cheol
Lee Chong-Eon
Ko Moon-Suck
Seong Pil-Nam
Park Beom-Young
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Abstract
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The association between the promoter region genotypes of the porcine adipocyte fatty acid binding protein (A-FABP) gene and carcass traits in commercial pigs was examined. Interestingly, only two different genotypes (-406T/T and T/C) for the A-FABP gene were detected using Hinf-RFLP for the substitution mutation T-406C in the A-FABP promoter in commercial pigs, and no -406C/C homozygotes were detected. The reason for the lack of the -406 C/C genotype is due to the breeding system in which only Duroc, which has a high frequency of -406C/- in this locus among the three breeds involved in commercial pig production, is typically used as a terminal sire. The pigs containing the genotype -406C/- were significantly associated with an increase in intramuscula. fat content and carcass weight (p<0.05), but there was no association with the other carcass traits tested (fat composition, color score, texture score, moisture, and separation score between muscles). This study suggests that the -406C/- genotype of the porcine A-FABP gene may not only be a useful molecular marker for intramuscular fat, but may also contribute to the improvement of meat quality by the production of well-marbled pigs by breeding animals containing this genotype, especially Duroc, as a terminal sire for commercial pigs.
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KEYWORD
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A-FABP, association, carcass trait, genotype, intramuscular fat
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