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KMID : 1025520120540050317
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Journal of Animal Science and Technology
2012 Volume.54 No. 5 p.317 ~ p.321
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Estimation of Genetic Parameters for Average Daily Gain and Carcass Traits of Hanwoo
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Park Byoung-Ho
Choi Tae-Jeong
Choi Je-Gwan
Choy Yun-Ho
Cho Kwang-Hyun
Lee Seung-Soo
Kim Si-Dong
Na Seung-Hwan
Choi You-Lim
Cho Chung-Il
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Abstract
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This study was conducted to identify the characteristics and estimate the genetic parameters of average daily gain (ADG) and carcass traits of Hanwoo. The data used in this study were 4,681 heads which were performance-tested and 4,442 heads which were progeny-tested in test station of National Agricultural Cooperative Federation. The means and standard deviations of ADG between 6~9 months (ADG:6-9), ADG between 9~12 (ADG:9-12) and ADG between 6~12 (ADG:6-12) from the performance test were 1.04 ± 0.16, 1.11 ± 0.17 and 1.07 ± 0.11, respectively. The phenotypic correlations of ADG:6-9 and ADG:9-12, ADG:6-9 and ADG:6-12, ADG:9-12 and ADG:6-12 were －0.03, 0.66 and 0.65, respectively. The phenotypic correlations of ADG:6-12 with carcass weight (CW), eye muscle area (EMA), backfat thickness (BF), and marbling score (MS) from progeny test were 0.446,0.199, 0.0266 and 0.045, respectively. Estimated heritabilities from the pooled data were 0.251 (ADG:6-12), 0.298 (CW), 0.424(EMA), 0.503 (BF) and 0.626 (MS), respectively. Estimated genetic correlations of ADG:6-12 with CW, EMA, BF, MS were 0.606, 0.292, －0.095 and －0.007, respectively. From these results, it could be suggested that selection for ADG significantly affects CW, EMA and BF by correlated response to selection.
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KEYWORD
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Hanwoo, Average daily gain, Genetic parameters
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