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http://dx.doi.org/10.5187/JAST.2005.47.2.261

Study on the Carcass Yield Grade of Hanwoo  

Lee, Jong-Mun (National Livestock Research Institute)
Yoo, Y.M. (National Livestock Research Institute)
Park, B.Y. (National Livestock Research Institute)
Chae, H.S. (National Livestock Research Institute)
Kim, D.H. (National Livestock Research Institute)
Kim, Y.K. (National Livestock Research Institute)
Choi, Y.I. (Chungbuk National University)
Publication Information
Journal of Animal Science and Technology / v.47, no.2, 2005 , pp. 261-270 More about this Journal
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
Yield grade; Hanwoo; Equation; Backfat thickness; Retail meat;
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