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ISSN : 1225-2964(Print)
ISSN : 2287-3317(Online)
Annals of Animal Resource Sciences Vol.25 No.1 pp.7-13
DOI : http://dx.doi.org/10.12718/AARS.2014.25.1.7

한우 암소 선형심사 형질에 대한 유전모수 추정에 관한 연구

조충일1, 최태정1, 조광현1, 최재관1, 이승수1, 최연호1, Mahboob Alam1, 구양모2, 이기환1, 박병호1*
농촌진흥청 국립축산과학원1, 한국종축개량협회2

Study on Genetic Parameters for Linear Type Traits in Hanwoo Cows

Byoungho Park1*, Chungil Cho1, Taejeong Choi1, Kwanghyun Cho1, Jaegwan Choi1, Seungsoo Lee1, Yunho Choy1, Mahboob Alam1, Yangmo Koo2, Kihwan Lee2
1National Institute of Animal Science, R.D.A.
2Korea Animal Improvement Association
(Received 31 October 2013, Revised 7 January 2014, Accepted 8 January 2014)

Abstract

The objectives of this study were to estimate genetic parameters for 10 linear conformation traits and finalscore in Hanwoo cows. A total of 53,277 records for type traits of Hanwoo cows were collected from 2008 to2012 from Korea Animal Improvement Association. Ten linear traits studied were stature, body length, chestdepth, body rump angle, rump length, pin bone width, udder volume, foot angle, rear legs side view, andrear legs rear view. The model included the fixed effects of herd-year-classifier, age at measurement and ageafter calving, the random animal additive genetic effect and residual effect. Heritability estimates for lineartype traits were ranged from 0.003 for rear legs side view to 0.213 for final score. Genetic correlations amonglinear type traits were ranged from -0.068 (for rear legs side view and rear legs rear view) to 0.982 (for bodylength and rump length). The final score was found to be in a strongest genetic correlation with rear legs rearview (0.947), followed by pin bone width (0.918), body length (0.887), rump length (0.883), chest depth (0.883),udder volume (0.811), stature (0.802), rump angle (0.637), foot angle (0.519) and rear legs side view (0.176).Corresponding phenotypic correlations for pairs of linear type traits were mostly similar in direction, butsmaller than the genetic correlations.

 

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