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당창권(Chang-Gwon Dang),김형철(Hyeong-Cheol Kim),장선식(Sun-Sik Jang),이정묵(Jeong-Mook Lee),홍영훈(Yeong-Hun Hong),전기준(Gi-Jun Jeon),연성흠(Seong-Heum Yeon),강희설(Hee-Seol Kang),양보석(Bo-Suk Yang),홍성구(Seong-Koo Hong),이준헌(J 충남대학교 농업과학연구소 2013 농업과학연구 Vol.40 No.4
The objective of this study was to establish genetic evaluation systems with carcass data collected by 68 individual farms from 2007 to 2011 in Pyeongchang area of Kangwon province. All the possible of environment effects were corrected by analysis of variance (ANOVA) to estimate more accurate genetic parameters. Heritabilities and genetic correlations were estimated from carcass data collected from Hanwoo steers(n=10,441) born in Pyeongchang region from 2005 to 2008. Traits evaluated included carcass weight (CWT), eye muscle area (EMA), back fat thickness (BF) and marbling score (MS). As for the mean value and standard deviation for carcass traits, CWT, EMA, BF and MS were 424.5, 92, 13.7 and 5.7. Parameters were estimated using a multiple trait animal model and derivative-free restricted maximum likelihood procedures. Estimated heritabilities for CWT, EMA, BF and MS were 0.30, 0.21, 0.42 and 0.42, respectively. Genetic correlation of CWT with EMA, BF and MS were estimated to 0.24, 0.36 and 0.07, respectively. Genetic correlation of EMA with BF and MS was -0.27 and 0.61, respectively.