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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

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.

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Cited by

  1. Estimates of Genetic parameters for Growth Traits of Different Breeds in Swine vol.48, pp.3, 2014, https://doi.org/10.14397/jals.2014.48.3.105