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Estimation of Environmental Effect and Genetic Parameters for The Carcass Traits in Hanwoo (Korean Cattle)

한우 도체형질의 환경효과 및 유전모수의 추정

  • Moon, W.G. (Division of Applied Life Science.Institute of Agriculture & Life Sciences, GyeongSang National University) ;
  • Kim, B.W. (Division of Applied Life Science.Institute of Agriculture & Life Sciences, GyeongSang National University) ;
  • Roh, S.H. (Hanwoo(korean Cattle) Improvement Center, NACF) ;
  • Kim, H.S. (Division of Applied Life Science.Institute of Agriculture & Life Sciences, GyeongSang National University) ;
  • Jung, D.J. (Gyeongsang Buk-do Livestock Research Institute) ;
  • Sun, D.W. (Division of Applied Life Science.Institute of Agriculture & Life Sciences, GyeongSang National University) ;
  • Kim, K.N. (Animal Products Grading Service) ;
  • Yoon, Y.T. (Animal Products Grading Service) ;
  • Jung, J.H. (Animal Products Grading Service) ;
  • Jeon, J.T. (Division of Applied Life Science.Institute of Agriculture & Life Sciences, GyeongSang National University) ;
  • Lee, J.G. (Division of Applied Life Science.Institute of Agriculture & Life Sciences, GyeongSang National University)
  • 문원곤 (경상대학교 응용생명과학부.농업생명과학연구원) ;
  • 김병우 (경상대학교 응용생명과학부.농업생명과학연구원) ;
  • 노승희 (경북축산기술연구소) ;
  • 김효선 (경상대학교 응용생명과학부.농업생명과학연구원) ;
  • 정대진 (농협중앙회 가축개량사업소) ;
  • 선두원 (경상대학교 응용생명과학부.농업생명과학연구원) ;
  • 김경남 (축산물등급판정소) ;
  • 윤영탁 (축산물등급판정소) ;
  • 정진형 (축산물등급판정소) ;
  • 전진태 (경상대학교 응용생명과학부.농업생명과학연구원) ;
  • 이정규 (경상대학교 응용생명과학부.농업생명과학연구원)
  • Published : 2007.12.31

Abstract

This study aims to estimate the genetic parameters for carcass traits on Hanwoo of breeding farmhouses using Animal Products Grading Service’s data of 428,812 cattle from 101 slaughterhouses nationwide from 2000 to 2005. Using carcass traits of carcass weight, eye muscle area, backfat thickness, marbling score, meat color and fat color that greatly influence Hanwoo's grade, the effects of carcass year, carcass season, sex and carcass region were estimated. Based upon carcass traits of carcass weight, eye muscle area, backfat thickness, marbling score and meat color that greatly influence Hanwoo’s grade, the heritabilities and genetic parameters were estimated of 17,578 Hanwoo slaughtered in 2005 with existing herdbook, where EM-REML algorithm was used in estimating genetic parameters. The mean and standard deviation of each carcass trait are 321.42±53.62kg, 76.25±10.43cm2, 9.96± 4.14mm, 3.75±2.00, 4.83±0.48 and 2.99±0.40, for carcass weight, eye muscle area, backfat thickness, marbling score, meat color and fat color, respectively. As a result of analysis on the effects of carcass year, the carcass weight, backfat thickness and meat color came out highest as 359.40±0.181, 9.82±0.017 and 4.90±0.002, respectively in 2004. As a result of analysis on the effects of carcass season, the carcass weight and eye muscle area came out highest as 345.88±0.144 and 79.57±0.033 respectively in spring, and the backfat thickness was highest as 8.78±0.013 in winter, and the meat color and fat color slightly came out higher as 4.88±0.002 and 2.96±0.001 in fall, while the marbling score was highest as 3.29±0.006 in summer. The results of the analysis on the effects of sex indicated that the backfat thickness and fat color were highest as 10.53±0.010 and 3.07±0.001 in cow, the carcass weight came out highest in Hanwoo steer as 368.03±0.068kg, the eye muscle area were highest as 82.96±0.042 in bull, and the marbling score was highest as 4.19±0.007 in steer, and the meat color was highest as 4.89±0.001 in cow. Regarding the results of analysis on the effects of carcass region, the carcass weight, eye muscle area,

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