Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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Study on the Carcass Yield Grade of Hanwoo

한우도체 육량등급 설정 연구

  • 이종문 (농촌진흥청 축산기술연구소) ;
  • 유영모 (농촌진흥청 축산기술연구소) ;
  • 박범영 (농촌진흥청 축산기술연구소) ;
  • 채현석 (농촌진흥청 축산기술연구소) ;
  • 김동훈 (농촌진흥청 축산기술연구소) ;
  • 김용곤 (농촌진흥청 축산기술연구소) ;
  • 최양일 (충북대학교)
  • Published : 2005.04.30
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Abstract

Total number of 237 Hanwoos were purchased from the nationwide fanns based on the different market weights and sex. After slaughtering, they were evaluated to estimate the productivity of carcass components by the sex and market weight, and to predict the beef carcass yield grade equation. The main results in this study were summarized as follows; With respect to carcass characteristics, the yield percentages were different(P < 0.01) among sex groups, but were not different among market weight groups. Sex or market weights showed significant effects on the carcass yield grade(YG) factors(BFT, RA, carcass weight(CW). The YG equation from this study could be expressed as a multiple regression y = 64.74 - 0.0198 ${\times}$ CW(kg) - 5.226 $\time$ BFT(cm)+0.1339 $\time$ RA($cm^2$ $R^2$ = 0.52 Among the YG factors, the BFT was the highest contributor to the YG equation. Compared the previous equation reported in 1992 with the equation from this study, the bias values between predicted value and the actual cutability were 9.17 and 2.39, respectively. In conclusion, the equation estimated from this study was more accurate in predicting the cutability than that from the previous equation reported in 1992.

Keywords

References

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