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Association of SNP Marker in the Leptin Gene with Carcass and Meat Quality Traits in Korean Cattle

  • Shin, S.C. (Division of Animal Science and Resources, College of Life Science and Natural Resources Sangji University) ;
  • Chung, E.R. (Division of Animal Science and Resources, College of Life Science and Natural Resources Sangji University)
  • Received : 2006.03.21
  • Accepted : 2006.07.10
  • Published : 2007.01.01

Abstract

Leptin is the hormone product of the obese gene and is synthesized and secreted predominantly by white adipocytes and relates to the feedback system that regulates long-term body fat weight and composition. Therefore, the leptin gene could be an excellent candidate gene controlling fat deposition, carcass traits and meat quality in beef cattle. The objective of this study was to evaluate the association of 3 SNPs (A1127T and C1180T in exon 2 and C3100T in exon 3) in the bovine leptin gene with carcass and meat quality traits in Korean cattle. The C1180T SNP was associated with backfat thickness (BF) and marbling score (MS) (p<0.05). Animals with the genotype CC had higher BF than animals with TT genotype and higher MS compared with CT and TT genotypes. No significant associations were observed between the C3100T SNP and any carcass and meat quality traits analyzed. The effect of the A1127T SNP was not analyzed because the TT genotype was not detected and the AT genotype showed only 1.0% frequency. These results suggest that the C1180T SNP of the leptin gene may be useful as a genetic marker for carcass and meat quality traits in Korean cattle.

Acknowledgement

Supported by : Rural Development Administration

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