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http://dx.doi.org/10.5187/JAST.2012.54.5.317

Estimation of Genetic Parameters for Average Daily Gain and Carcass Traits of Hanwoo  

Park, Byoungho (National Institute of Animal Science, RDA)
Choi, Taejeong (National Institute of Animal Science, RDA)
Choi, Jae Gwan (National Institute of Animal Science, RDA)
Choy, Yun Ho (National Institute of Animal Science, RDA)
Cho, Kwang Hyun (National Institute of Animal Science, RDA)
Lee, Seung Soo (National Institute of Animal Science, RDA)
Kim, Sidong (National Institute of Animal Science, RDA)
Kwon, Oh Sub (National Institute of Animal Science, RDA)
Na, Seung Hwan (National Institute of Animal Science, RDA)
Choi, You Lim (National Institute of Animal Science, RDA)
Cho, Chungil (National Institute of Animal Science, RDA)
Publication Information
Journal of Animal Science and Technology / v.54, no.5, 2012 , pp. 317-321 More about this Journal
Abstract
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 $1.04{\pm}0.16$, $1.11{\pm}0.17$ and $1.07{\pm}0.11$, 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.
Keywords
Hanwoo; Average daily gain; Genetic parameters;
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