Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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Estimation of Heritability and Genetic Parameter for Growth and Body Traits of Pig

종돈의 성장 및 체형 형질에 대한 유전력 및 유전모수 추정에 관한 연구

  • Kang, Hyun-Sung (Dept of Animal Science & Technology, Sunchon National University) ;
  • Nam, Ki-Chang (Dept of Animal Science & Technology, Sunchon National University) ;
  • Kim, Kyung-Tai (Breeding pig Improvement Center, NACF) ;
  • Na, Chong-Sam (Dept of Animal Biotechnology, Chonbuk National University) ;
  • Seo, Kang-Seok (Dept of Animal Science & Technology, Sunchon National University)
  • 강현성 (국립순천대학교 동물자원과학과) ;
  • 남기창 (국립순천대학교 동물자원과학과) ;
  • 김경태 (농협중앙회 종돈개량사업소) ;
  • 나종삼 (국립전북대학교 동물자원과학과) ;
  • 서강석 (국립순천대학교 동물자원과학과)
  • Received : 2012.02.28
  • Accepted : 2012.04.12
  • Published : 2012.04.30
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Abstract

The purpose of this study was to estimate genetic parameters for productive traits in swine. Productive traits were considered on average daily gain (ADG), body height (BH) and body length (BL). Genetic analysis was consisted of 18,668 heads for productive traits which were based on on-farm performance tested from May, 2007 to Apr, 2011. For estimating genetic parameters on productive traits, single best model was fitted after finding source of variance on fixed and random effects and estimated with a multiple trait animal model by using DF-REML (Derivative-Free Restricted Maximum Likelihood). The estimated heritabilities of Duroc, Berkshire, Landrace and Yorkshire 0.22-0.58 for the average daily gain, 0.34-0.41 for the body height and 0.4-0.52 for the body length, respectively. Phenotypic correlations of average daily gain with body height and body length for the four breeds were 0.42-0.48, 0.53-0.58, 0.34-0.46 and 0.47-0.56, respectively. Phenotypic correlations of body height with body length were 0.41, 0.57, 0.52, 0.59, respectively. The estimated genetic correlation coefficients of average daily gain with body height and body length estimated for the four breeds were 0.34-0.47, 0.70-0.75, 0.17-0.38 and 0.50-0.53, respectively. The estimated genetic correlation coefficients of body height with body length were 0.57, 0.69, 0.61 and 0.71, respectively.

본 연구에서는 18,668두의 자가검정 및 입회검정된 돼지 자료를 이용하여 유전모수를 추정하였다. 2007년부터 2011년 4월까지 전라남도 영광 소재 N 종돈장에서 검정된 Duroc, Berkshire, Landrace 및 Yorkshire종 18,668두에 대한 자료를 근거로 하여 돼지의 주요 산육형질인 일당증체량, 체고 및 체장에 대한 유전력, 유전상관 및 표현형상관을 다형질 Animal model을 이용하여 추정하였다. 본 연구에서 추정된 Duroc종에 대한 일당증체량, 체고 및 체장에 대한 유전력은 0.22, 0.37, 0.4로 추정되었으며 Berkshire종의 유전력은 0.58, 0.34 및 0.48로 나타났고 Landrace종의 각 형질의 유전력은 0.26, 0.41 및 0.52이었으며 Yorkshire종의 유전력은 0.28, 0.39 및 0.43을 나타내었다. 본 연구에서 추정된Duroc의 주요 경제 형질간의 유전 상관 및 표현형 상관은 일당 증체량과, 체고, 체장, 체고와 체장간에 각각 유전, 표현형 상관 0.33, 0.47과 0.42, 0.48 그리고 0.57 및 0.41로 추정되었으며 Berkshire종 유전 상관 및 표현형 상관은 0.75, 0.70 및 0.53, 0.58 그리고 체고의 대한 체장은 0.69 및 0.57을 나타내었다. Landrace종의 경우 유전 상관 및 표현형 상관이 일당증체량과, 체고, 체장, 체고와 체장간에 각각 유전, 표현형 상관 0.17, 0.38과 0.34, 0.46 그리고 0.61 및 0.52로 추정 되었으며 Yorkshire종은 0.50, 0.53 및 0.47, 0.56 그리고 0.71, 0.59로 추정되었다.

Keywords

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