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http://dx.doi.org/10.5187/JAST.2012.54.2.83

Estimation of Heritability and Genetic Parameter for Growth and Body Traits of Pig  

Kang, Hyun-Sung (Dept of Animal Science & Technology, Sunchon National University)
Nam, Ki-Chang (Dept of Animal Science & Technology, Sunchon National University)
Kim, Kyung-Tai (Breeding pig Improvement Center, NACF)
Na, Chong-Sam (Dept of Animal Biotechnology, Chonbuk National University)
Seo, Kang-Seok (Dept of Animal Science & Technology, Sunchon National University)
Publication Information
Journal of Animal Science and Technology / v.54, no.2, 2012 , pp. 83-87 More about this Journal
Abstract
The purpose of this study was to estimate genetic parameters for productive traits in swine. Productive traits were considered on average daily gain (ADG), body height (BH) and body length (BL). Genetic analysis was consisted of 18,668 heads for productive traits which were based on on-farm performance tested from May, 2007 to Apr, 2011. For estimating genetic parameters on productive traits, single best model was fitted after finding source of variance on fixed and random effects and estimated with a multiple trait animal model by using DF-REML (Derivative-Free Restricted Maximum Likelihood). The estimated heritabilities of Duroc, Berkshire, Landrace and Yorkshire 0.22-0.58 for the average daily gain, 0.34-0.41 for the body height and 0.4-0.52 for the body length, respectively. Phenotypic correlations of average daily gain with body height and body length for the four breeds were 0.42-0.48, 0.53-0.58, 0.34-0.46 and 0.47-0.56, respectively. Phenotypic correlations of body height with body length were 0.41, 0.57, 0.52, 0.59, respectively. The estimated genetic correlation coefficients of average daily gain with body height and body length estimated for the four breeds were 0.34-0.47, 0.70-0.75, 0.17-0.38 and 0.50-0.53, respectively. The estimated genetic correlation coefficients of body height with body length were 0.57, 0.69, 0.61 and 0.71, respectively.
Keywords
Genetic correlations; Animal model; Average daily gain; Body weight;
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Times Cited By KSCI : 1  (Citation Analysis)
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