Food Science of Animal Resources (한국축산식품학회지)

Korean Society for Food Science of Animal Resources (한국축산식품학회)
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Study on the Carcass Yield Grade Traits and Prediction of Retail Product Weight in Hanwoo Beef

한우도체의 육량등급 요인 특성과 판매 정육량 추정

  • 이종문 (농촌진흥청 국립축산과학원) ;
  • 하경희 (농촌진흥청 국립축산과학원) ;
  • 김진형 (농촌진흥청 국립축산과학원) ;
  • 조수현 (농촌진흥청 국립축산과학원) ;
  • 성필남 (농촌진흥청 국립축산과학원) ;
  • 정명옥 (농촌진흥청 국립축산과학원) ;
  • 조용민 (농촌진흥청 국립축산과학원) ;
  • 박범영 (농촌진흥청 국립축산과학원) ;
  • 김동훈 (농촌진흥청 국립축산과학원) ;
  • 안종남 (농촌진흥청 국립축산과학원)
  • Published : 2008.12.31
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Abstract

Analyses were conducted to estimate carcass component of yield grade factors by sex and live weight class and to develop the prediction equation of retail product weight by sex in Korean native cattle (Hanwoo). Data from 42,113 Hanwoo carcasses were used to estimate the traits of yield grade factor and an additional 1,066 carcasses were used to develop the prediction equation of retail meat weight. The average of fasting weight of cow, bull and steer were 529 kg, 596 kg, and 634 kg respectively. Carcass weight (CW), backfat thickness (BFT), loineye area (REA), Index score of wholesale meat and yield grade were significantly (p<0.01) affected by sex and live weight. The lean meat percentage, fat percentage and bone percentage based on the weight of cold carcasses were significantly different (p<0.05) between sex groups. The equation of predicting the retail meat product from this study could be expressed as a multiple regression $Y=-4.18+0.63{\times}CW\;(kg)-0.17{\times}BFT\;(cm)+0.16{\times}REA\;(cm^2)$, $R^2=0.93$. Among the independent factors, the BFT was the highest contributor to the prediction equation. Using the equation from this study should allow for rapid, precise and cost-effective assessment of the retail product in Hanwoo beef carcasses.

한우도체의 육량등급요인인 도체중, 등지방두께 및 배장근단면적과 이들 요인으로 산정된 육량지수와 육량등급은 성 및 출하체중 별로 유의적인 차이가 있는 것으로 분석되었다. 본 연구에서 설정된 성별 도체의 소매 정육량 예측식은 적합도($R^2$)가 높아 유통현장에서 도체의 상품가치를 손상시키지 않고 신속하고 정확하며 저비용으로 소매 정육량을 예측하는데 유용하게 이용될 수 있으며 또한 국가에서는 소고기 수급계획 수립에 활용하고 브랜드한우단체 등에서는 직판장의 공급량 결정에 이용할 수 있겠다. 한우도체의 판매정육량을 좀더 정확하게 예측할 수 있는 추정식을 산출하기 위해서는 성별로 도체중, 등지방두께 및 배장근면적과 같은 측정요인이 출하체중 증가에 따라 균일하게 발현되도록 효과적인 개량과 사양관리가 선결되어야 하겠다.

Keywords

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