Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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A study of Association of the H-FABP RFLP with Economic Traits of Pigs

돼지 H-FABP 유전자의 다형성 및 경제 형질과의 연관성 구명

  • Choi, B.H. (National Livestock Research Institute, RDA) ;
  • Kim, T.H. (National Livestock Research Institute, RDA) ;
  • Lee, J.W. (National Livestock Research Institute, RDA) ;
  • Cho, Y.M. (National Livestock Research Institute, RDA) ;
  • Lee, H.Y. (National Livestock Research Institute, RDA) ;
  • Cho, B.W. (Department of Animal Science, Miryang National University) ;
  • Cheong, I.C. (National Livestock Research Institute, RDA)
  • 최봉환 (농촌진흥청 축산기술연구소) ;
  • 김태헌 (농촌진흥청 축산기술연구소) ;
  • 이지웅 (농촌진흥청 축산기술연구소) ;
  • 조용민 (농촌진흥청 축산기술연구소) ;
  • 이혜영 (농촌진흥청 축산기술연구소) ;
  • 조병욱 (밀양대학교 동물자원학과) ;
  • 정일정 (농촌진흥청 축산기술연구소)
  • Published : 2003.10.31
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Abstract

The purpose of this study was to detect association between genetic variation and economic trait in the porcine heart type fatty acid-binding protein gene as a candidate gene for the traits related with growth and meat quality in pigs. The H-FABP is a 15-kDa protein expressed in several tissues with high demand for fat metabolism such as cardiac and skeletal muscle and lactating mammary gland. H-FABP is small intracellular protein involved in fatty acid transport from the plasma membrane to the site of $\beta$-oxidation and/or triacylglycerol or phospholipid synthesis. In this study, H-FABP PCR-RFLP was performed in F$_2$ population composed of 214 individuals from an intercross between Korean Native Boars and Landrace sows. PCR products from two primer sets within H-FABP gene were amplified in 850bp and 700bp. Digestion of PCR products with the restriction digestion enzymes HaeⅢ and HinfⅠ, revealed fragment length polymorphisms(RFLPs). The genotype frequencies from H-FABP/HaeⅢ was .29 for genotype DD, .53 for genotype Dd, and .15 for genotype dd, respectively. The genotype frequencies of HH, Hh, and hh from H-FABP/HinfⅠ was .38, .41 and .20, respectively, in the population. Relationships between their genotypes and economic traits were estimated. In H-FABP/HaeⅢ locus, there were specific genotypes(Dd and dd) associated with economic traits such as body weights at 3, 5, 12, and 30 week of age (p〈.05 to .001). The ‘d’ allele was associated with gaining of body weight. In H-FABP/HinfⅠ locus, Genotypes of HH and Hh associated with growth traits such as body weights at 5, 12, and 30 week of age (p〈.05 or p〈.001) and back fat thickness, body fat including abdominal and trimmed fat (p〈.001) and intramuscular fat(p〈.05) The ‘H’ allele was positively associated with gaining of body weight and fatness deposition. In conclusion, a significant association of the H-FABP gene from its genetic variation was found on body weight, intramuscular fat and backfat thickness.

본 연구는 재래돼지와 랜드레이스를 기초축으로 이용한 F$_2$ 241두에 대해 Heart Fatty Acid- Binding Protein 유전자와 연관되어 있는 PCR- RFLP를 이용하여 그 다형성을 조사하고 돼지의 성장형질, 도체형질, 육질형질과 그 유전자형간의 연관성을 구명코자 실시하였다. H-FABP PCR-RFLP는 두 쌍의 primer에 의한 850bp와 700bp의 증폭산물을 HaeⅢ와 HinfⅠ제한효소를 사용하여 실시되었다. HaeⅢ을 이용한 PCR-RFLP 유전자형은 DD형/700+150bp, Dd형/700+400+300+ 150bp 그리고 dd형/400+300+150bp의 DNA 단편을 보였으며, Hinf1에 의한 유전자형은 HH형은 350+180+130bp, Hh형은 350+220+180+130bp, hh형/350+220+130bp의 절단된 DNA 단편을 보였다. H-FABP/HaeⅢ 유전자형 중에서 12주령 체중은 DD형에 비해 Dd와 dd형에서 유의적으로 높은 값을 보였으며(p〈0.001), 3주령 체중 (p〈0.01)과 5주령, 30주령 체중 (p〈0.05)에 경우도 Dd와 dd형에서 유의적으로 높게 관찰되었고(Table 3), 특히 ‘d’ 대립유전자가 체중과 연관성이 있음이 관찰되었다. H-FABP/HinfⅠ의 유전자형과 표현형질의 연관성을 보면 12주령, 30주령 체중 및 도체지방 과 등지방 두께에서는 hh형에 비해 HH와 Hh형에서 유의적으로 높게 나타났으며(p〈0.001), 5주령 체중과 근내지방 함량에서도 HH형에서 유의적으로 높게 관찰되었고(p〈0.05), 특히 ‘H’ 대립유전자가 체중과 도체지방, 등지방 두께 및 근내지방 함량과 연관성이 있음이 관찰되었다. 따라서 돼지성장 및 지방축적과 관련한 선발력을 높이기 위해 H- FABP PCR-RFLP(HaeⅢ & HinfⅠ)를 분자생물학적 marker로 사용할 수 있을 것으로 사료된다.

Keywords

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