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Genetic Relationship between Carcass Traits and Carcass Price of Korean Cattle
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 Title & Authors
Genetic Relationship between Carcass Traits and Carcass Price of Korean Cattle
Kim, Jong-Bok; Kim, Dae-Jung; Lee, Jeong-Koo; Lee, Chae-Young;
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 Abstract
The objectives of this study were to estimate genetic parameters for the carcass price and carcass traits contributing to carcass grading and to investigate the influence of each carcass trait on the carcass price using multiple regression and path analyses. Data for carcass traits and carcass prices were collected from March 2003 to January 2009 on steers of Korean cattle raised at private farms. The analytical mixed animal model, including slaughter house-year-month combination, linear and quadratic slaughter age as fixed effects and random animal and residual effects, was used to estimate genetic parameters. The effects of carcass traits on the carcass price were evaluated by applying multiple regression analyses. Heritability estimates of carcass traits were for carcass weight (CWT), for back fat thickness (BFT), for eye-muscle area (EMA) and for marbling score (MS), and those of carcass prices were for auction price per 1 kg of carcass weight (AP) and for total price (CP). Genetic correlation coefficients of AP with CWT and MS were and , respectively, and those of CP with CWT and MS were and respectively. If an appropriate adjustment for temporal economic value is available, the moderate heritability estimates of AP and CP might suggest their potential use as the breeding objectives for improving the gross incomes of beef cattle farms. The large genetic correlation estimates of carcass price variables with CWT and MS implied that simultaneous selection for both CWT and MS would be also useful in enhancing income.
 Keywords
Carcass Price;Carcass Trait;Heritability;Multiple Regression;Path Analyses;
 Language
English
 Cited by
1.
사육농가의 효과가 한우 암소의 도체형질 유전 평가에 미치는 영향,이창우;이정묵;이성진;송영한;이정구;김종복;

Journal of Animal Science and Technology, 2011. vol.53. 4, pp.325-332 crossref(new window)
2.
한우의 경락가격에 대한 요인별 기여도 분석,선두원;김병우;박재찬;이정규;

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