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KMID : 1024620080280050604
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Food Science of Animal Resources
2008 Volume.28 No. 5 p.604 ~ p.609
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Study on the Carcass Yield Grade Traits and Prediction of Retail Product Weight in Hanwoo Beef
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Lee Jong-Moon
Hah Kyung-Hee
Kim Jin-Hyoung
Cho Soo-Hyun
Seong Pil-Nam
Jung Meyung-Ok
Cho Yong-Min
Park Beom-Young
Kim Dong-Hun
Ahn Chong-Nam
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Abstract
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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 , . 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.
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KEYWORD
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yield grade, Hanwoo Beef, equation, backfat thickness, retail product
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