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pp.84-88
This study was carried out to development paternal selection indices for improvement of meat production ability in Korean Native Pigs which were raised at the swine farm. Records on 1,053 Korean native pigs for average daily gain (ADG), age at 70 kg (D70 kg) and backfat thickness (BF) made between 2001 and 2010 in herds on National Institutes of Animal Science in Korea were used to estimate genetic parameters. The data was analyzed by the MTDF-REML (Derivative-Free Restricted Maximum Likelihood) program of Boldman using a multi-trait animal model. The results to estimatethe genetic parameters were as follows. Heritabilities were 0.26, 0.09, and 0.29 for ADG, D70 kg and BF, respectively. The phenotypic correlations of ADG with D70 kg and BF were -0.89 and 0.15. The phenotypic correlation of D70 kg with BF was -0.16. The genetic correlations of ADG with D70 kg and BF were -0.28, 0.93, respectively. The genetic correlation of D70 kg with BF was -0.34. Selection indices were calculated as follows using genetic parameters and economic values estimated in this study. I1=100+9.72(ADG–)–1.33(BF–), I2=100–0.14(D70 kg–)–1.16(BF–), where ADG is individual average daily gain, is average daily gain of contemporary group, BF is individual backfat thickness, is backfat thickness of contemporary group, D70 kg is individual days to 70 kg and is days to 70 kg of contemporary group
