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Association Study between Porcine LEPR-derived Microsatellite Polymorphisms and Economic Traits

돼지 leptin receptor내 초위성체 다형성과 경제형질과의 연관성 구명

  • Choi, B.H. (National Livestock Research Institute, RDA) ;
  • Kim, T.H. (National Livestock Research Institute, RDA) ;
  • Cho, Y.M. (National Livestock Research Institute, RDA) ;
  • Lee, H.Y. (National Livestock Research Institute, RDA) ;
  • Jeon, J.T. (National Livestock Research Institute, RDA Division of Animal Science, College of Agriculture, Gyeongsang National University) ;
  • Cheong, I.C. (National Livestock Research Institute, RDA)
  • 최봉환 (농촌진흥청 축산기술연구소) ;
  • 김태헌 (농촌진흥청 축산기술연구소) ;
  • 조용민 (농촌진흥청 축산기술연구소) ;
  • 이혜영 (농촌진흥청 축산기술연구소) ;
  • 전진태 (경상대학교 축산과학부) ;
  • 정일정 (농촌진흥청 축산기술연구소)
  • Published : 2003.10.31

Abstract

The leptin receptor gene(LEPR) produces a high affinity receptor that mediates the regulation of the leptin gene. Leptin secreted from adipose tissue plays an important role in regulating feed intake and energy balance. In this study, a microsatellite marker within LEPR was selected and genotyped for the F2 population composed of 354 individuals from an intercross between Korean Native boars and Landrace sows. Totally, six alleles (255, 259, 261, 263, 265 and 267bp) and nineteen genotypes were detected in the population, of which the CE (261/265), CC (261/261) and EE (265/265) types were observed by 20.0%, 10.1% and 9.6%, respectively. Relationships between their genotypes and economic traits were analyzed. We found specific genotypes associated with economic traits such as body weight at 12 weeks of age/body fat including abdominal and trimmed fat/shear force (P〈0.001), body weight of 30 weeks of age (P〈0.01) and body weight of 3 weeks of age/back fat thickness (P〈0.05). The DD (263/263) and DF (263/267) types were associated with body weight at 3, 5, 12 and 30 weeks of age. The DF (263/267) type showed a highly significant effect on back fat thickness and body fat including abdominal and trimmed fat. The DF (263/267) type showed positive effect on shear force, whereas the BB (259/259) and DD (263/263) types negatively affected on tenderness.

Keywords

Leptin receptor;Microsatellite;Korean Native Pig;Genotype;Economic traits

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