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Leptin Polymorphisms Associated with Carcass Traits of Meat in Korean Cattle

  • Cheong, Hyun Sub ;
  • Yoon, Du-Hak ;
  • Kim, Lyoung Hyo ;
  • Park, Byung Lae ;
  • Chung, Eui Ryong ;
  • Lee, Han Ju ;
  • Cheong, Il-Cheong ;
  • Oh, Sung-Jong ;
  • Shin, Hyoung Doo
  • Received : 2005.11.07
  • Accepted : 2006.04.21
  • Published : 2006.11.01

Abstract

Leptin has been investigated as a candidate gene for fat characteristics in beef cattle. Previously, we have reported 57 sequence variants discovered in Korean cattle (Bos Taurus coreanae). In this study, we examined the association between polymorphisms of leptin and carcass traits (cold carcass weight (CWT) and marbling score (Marb)) in Korean cattle. Among 57 polymorphisms, 11 common polymorphic sites were genotyped in our beef cattle (n = 437). Statistical analysis revealed that one single nucleotide polymorphism in coding exon (c.+411T>C (A137A)) showed a significant association with the yield trait, CWT. The C-bearing genotypes (CC or CT) of c.+411T>C (A137A) showed the higher CWT (p = 0.006). c.+150C>G (S50S) also showed a significant association with the quality trait, Marb (p = 0.01). Our findings suggest that polymorphisms in leptin might be one of the important genetic factors that influence carcass yield and quality in beef cattle, especially in CWT and Marb.

Keywords

Leptin;Cold Carcass Weight;Marbling Score;Polymorphism

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Acknowledgement

Supported by : Rural Development Administration