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The effect of the evaluation factor for genetic improvement associated with economic traits of Hanwoo
Journal of the Korean Data & Information Science Society 2018;29:1279-86
Published online September 30, 2018
© 2018 Korean Data and Information Science Society.

Jung-Min Han1 · Yoonseok Lee2 · Hong Sik Kong3

1Hankyong and Genetics, Hankyong National Unversity
23Department of Biotechnology, Hankyong National University
Correspondence to: Department of Biotechnology, Hankyong National University, Anseong 17579, Korea. E-mail: kebinkhs@hknu.ac.kr
This work was carried out with the support of “Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ013322)” Rural Development Administration, Republic of Korea.
Received August 16, 2018; Revised September 12, 2018; Accepted September 13, 2018.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
This study examined effects of the carcass traits (backfat, carcass weight, Longissinus dorsi muscle area, and marbling score) of steer and elite cows and their environmental effects (region, season of slaughter, and year of slaughter). The effects were estimated using data of carcass traits of 53,992 heads of steer butchered from 2010 to 2017 in the country. Fixed effects of each trait were environmental effects and elite cows, and the covariance was the breeding months. The effects of elite cows showed significant results in CW, LMA, and MS but not in the thickness of BF. The correlation analysis on environmental effects and carcass traits showed significant results in all traits (p < 0.05). These findings confirmed gradual enhancements in genetic capacities of Hanwoo in the entire country and revealed that in assessing the heritability, the factor of “elite cows” showed that the chosen individuals produced steer with higher grade carcass traits than that produced by other individuals. The findings of this study are applicable to the model of genetic assessment of Hanwoo and can be used as baseline data for the necessity of future cow enhancements.
Keywords : Carcass trait, elite cow, environmental factors, genetic evaluation system, Hanwoo.