Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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Estimation of Genetic Parameters for Average Daily Gain and Carcass Traits of Hanwoo

한우 검정우의 일당증체량에 관한 연구

  • 박병호 (농촌진흥청 국립축산과학원) ;
  • 최태정 (농촌진흥청 국립축산과학원) ;
  • 최재관 (농촌진흥청 국립축산과학원) ;
  • 최연호 (농촌진흥청 국립축산과학원) ;
  • 조광현 (농촌진흥청 국립축산과학원) ;
  • 이승수 (농촌진흥청 국립축산과학원) ;
  • 김시동 (농촌진흥청 국립축산과학원) ;
  • 권오섭 (농촌진흥청 국립축산과학원) ;
  • 나승환 (농촌진흥청 국립축산과학원) ;
  • 최유림 (농촌진흥청 국립축산과학원) ;
  • 조충일 (농촌진흥청 국립축산과학원)
  • Received : 2012.07.02
  • Accepted : 2012.10.25
  • Published : 2012.10.31
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Abstract

This study was conducted to identify the characteristics and estimate the genetic parameters of average daily gain (ADG) and carcass traits of Hanwoo. The data used in this study were 4,681 heads which were performance-tested and 4,442 heads which were progeny-tested in test station of National Agricultural Cooperative Federation. The means and standard deviations of ADG between 6~9 months (ADG:6-9), ADG between 9~12 (ADG:9-12) and ADG between 6~12 (ADG:6-12) from the performance test were $1.04{\pm}0.16$, $1.11{\pm}0.17$ and $1.07{\pm}0.11$, respectively. The phenotypic correlations of ADG:6-9 and ADG:9-12, ADG:6-9 and ADG:6-12, ADG:9-12 and ADG:6-12 were -0.03, 0.66 and 0.65, respectively. The phenotypic correlations of ADG:6-12 with carcass weight (CW), eye muscle area (EMA), backfat thickness (BF), and marbling score (MS) from progeny test were 0.446, 0.199, 0.0266 and 0.045, respectively. Estimated heritabilities from the pooled data were 0.251 (ADG:6-12), 0.298 (CW), 0.424 (EMA), 0.503 (BF) and 0.626 (MS), respectively. Estimated genetic correlations of ADG:6-12 with CW, EMA, BF, MS were 0.606, 0.292, -0.095 and -0.007, respectively. From these results, it could be suggested that selection for ADG significantly affects CW, EMA and BF by correlated response to selection.

본 연구는 당대검정 한우 4,681두와 후대검정 한우 4,442두의 자료를 이용하여 한우 일당증체량을 통한 성장 특성과 유전력을 추정하고, 도체형질과의 유전상관을 알아보고자 수행하였다. 당대검정우에서 구한 6~9개월령, 9~12개월령, 6~12개월령 일당증체량의 평균과 표준편차는 각각 $1.04{\pm}0.16$ kg, $1.11{\pm}0.17$ kg, $1.07{\pm}0.11$ kg이었으며, 6~9개월령과 9~12개월령, 6~9개월령과 6~12개월령, 9~12개월령과 6~12개월령 일당증체량의 표현형 상관이 각각 -0.03, 0.66, 0.65였다. 후대검정우에서 구한 6~12개월령 일당증체량과 도체중, 등심단면적, 등지방두께 및 근내지방도의 표현형 상관은 각각 0.446, 0.199, 0.0266 및 0.045였다. 6~12개월령 일당증체량, 도체중, 등심단면적, 등지방두께 및 근내지방도의 유전력은 각각 0.251, 0.298, 0.424, 0.503 및 0.626이었으며, 6~12개월령 일당증체량과 도체중, 등심단면적, 등지방두께 및 근내지방도의 유전상관은 각각 0.606, 0.292, -0.095 및 -0.007이었다. 본 연구로부터 일당증체량에 대한 개량으로 도체 중, 등심단면적 및 등지방두께에 대한 개량이 가능할 것으로 사료된다.

Keywords

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