Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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Correlation Analyses on Body Size Traits, Carcass Traits and Primal Cuts in Hanwoo Steers

한우 후대검정우 체척, 도체형질 및 부분육간 상관분석

  • 이재구 (농촌진흥청 국립축산과학원) ;
  • 이승수 (농촌진흥청 국립축산과학원) ;
  • 조광현 (농촌진흥청 국립축산과학원) ;
  • 조충일 (농촌진흥청 국립축산과학원) ;
  • 최연호 (농촌진흥청 국립축산과학원) ;
  • 최재관 (농촌진흥청 국립축산과학원) ;
  • 박병호 (농촌진흥청 국립축산과학원) ;
  • 나종삼 (전북대학교 동물생명공학과) ;
  • 최태정 (농촌진흥청 국립축산과학원)
  • Received : 2013.01.31
  • Accepted : 2013.08.19
  • Published : 2013.10.31
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Abstract

This study was conducted to estimate the correlation structure between body size traits, carcass traits, and primal cuts in Hanwoo steers. Hanwoo progeny test data (body weight and body measurements) were collected from 2008 to 2010 from a total of 882 steers at the Hanwoo Improvement Main Center (NACF). Carcass traits considered were cold carcass weight, eye muscle area, backfat thickness, and marbling scores evaluated at the time of carcass grading. Correlation analyses were performed with observed scales of the traits and with residuals considering fixed environmental effects in generalized linear models. The correlation coefficient estimated between loin weight and chest girth was high at 0.74. The shank negatively correlated with pelvic width (-0.23) and hipbone width (-0.27). In addition, rib weight and chest girth was highly correlated (0.80). The correlation between carcass weight and chest girth was 0.86 in observed scale. Residual correlation between these traits was estimated at 0.65. Correlation between carcass weight and loin was 0.87 in the observed scale. Residual correlation was estimated at 0.83. The correlation coefficient estimated between shank weight and brisket and flank weight was negative at -0.69. Chest girth had a high correlation between primal cuts weight and body measurements. Thus, we believe that these results will provide a greater understanding on the relationship of primal cuts and other phenotypes, thus enabling valid production models for Hanwoo steers.

본 연구는 2008년도부터 2010년까지 농협중앙회 한우개량사업소에서 후대검정한 46~50차 한우거세우 882두의 24개월 체척형질 측정자료, 24개월령에 도축하여 조사한 도체형질 판정자료, 생체중(12, 24개월령) 그리고 24개월령에 도축하여 조사한 부분육 형질을 이용하였다. 본 연구는 한우 도체의 각 부위별 생산량과 상관도가 높은 체척형질을 조사하는데 그 목적이 있으며 이를 위하여 성장형질, 도체성적 및 부분육간의 관측치 상관과 환경효과를 고려한 잔차상관을 구하였다. 부분육과 체척간의 상관관계에서 등심은 흉위와 0.74의 높은 정상관을 나타냈고, 사태는 곤폭, 좌골폭과 관측치 상관이 -0.23, -0.27로 나타났다. 갈비는 흉위와 0.80의 높은 정상관이였다. 체척과 도체성적의 상관관계에서는 도체중과 흉위의 관측치 상관과 잔차상관이 각각 0.86, 0.65로 높게 나타났다. 도체형질과 부분육의 상관관계는 도체중과 등심의 관측치 상관과 잔차상관이 각각 0.87, 0.83으로 나타났으며 등심단면적은 등심, 채끝과 각각 0.65, 0.68의 상관을 나타냈다. 부분육간의 상관관계에서는 사태와 양지가 -0.69의 부의 상관을 나타냈다. 소비량이 높은 등심, 안심 및 갈비는 체척형질 중 흉위와의 상관이 높았고 흉위는 도체중과 상관이 높았다. 따라서 흉위가 커질수록 도체중이 증가될 것으로 예상되며 흉위의 개량을 통해 등심, 안심 및 갈비의 생산량이 늘어날 것으로 사료된다. 본 연구의 결과는 다중회귀모형을 이용한 부분육생산량 예측모형을 개발하는데 기초연구로서 활용 가능할 것으로 생각된다.

Keywords

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  2. Expected Genetic Progress of Primal Cut Weights and Percentages by Different Selection Index Weights in Hanwoo vol.49, pp.5, 2015, https://doi.org/10.14397/jals.2015.49.5.179
  3. Carcass Characteristics and Primal Cuts Yields by Live Weight of Hanwoo Steers in Gyeongbuk Province vol.52, pp.2, 2018, https://doi.org/10.14397/jals.2018.52.2.151