Journal of Animal Breeding and Genomics (J Anim Breed Genom)
Du Won Sun1, Eun Ho Kim2, Hyeon Kwon Kim3, Il Keun Kong2, Jung Gyu Lee2, Hyun Tae Lim2*
1Gyeongnam Animal Science & Technology, Gyeongsang National University, Jinju 52828, Korea
2Department of Animal Science, Gyeongsang National University, Jinju 52828, Korea
3Poultry Research Institute, Rural Development Administration National Institute of Animal Science, Pyeongchang 25342, Korea
Correspondence to Hyun Tae Lim, E-mail: s_htim@gnu.ac.kr
Volume 7, Number 3, Pages 123-131, September 2023.
Journal of Animal Breeding and Genomics 2023, 7(3), 123-131. https://doi.org/10.12972/jabng.20230014
Received on 30 August, 2023, Revised on 18 September, 2023, Accepted on 22 September, 2023, Published on 30 September, 2023.
Copyright © 2023 Korean Society of Animal Breeding and Genetics.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0).
This study estimated the environmental effects and genetic parameters for carcass traits of 2,309 Hanwoo steers produced through Embryo Transfer (ET) to confirm the performance improvement achieved. The data used for analysis collected information on offspring produced by ET from 2012 to 2020. SAS 9.4 GLM package was used to analyze the environmental effects affecting carcass traits, and genetic parameters were estimated using the REMLF90 program for heritability, genetic correlation, and phenotypic correlation. The collected Carcass Weight (CWT), Eye Muscle Area (EMA), Back-Fat Thickness (BFT), and Marbling Score (MS) were 505.2±58.19kg, 105.57±13.41cm2, 12.76±4.27mm, and 7.25±1.61 points, respectively. It was found that the environmental effect of growth area and slaughter month had a significant effect (p<0.01) on carcass traits. Heritability was 0.51, 0.64, 0.36, and 0.59 in CWT, EMA, BFT, and MS, respectively, and high heritability was observed in all traits except BFT. Due to the characteristics of ET, it is considered that the effect of genetic improvement was more pronounced because there were many offspring with the same parents or the same father or mother. Therefore, it is judged that more efficient improvement effect and performance can be confirmed if an optimal environmental model is set based on the results of this study and used as basic data for breeding. If these results continue to accumulate, it is thought that it will be able to contribute to the increase in farm household income through the improvement effect.
Hanwoo, Ovum Pick Up, Genetic parameter, Environment effect, Genetic improvement
농촌진흥청(Rural Development Administration) 공동연구사업(과제번호: PJ0162182021)의 지원에 의해 이루어진 것이며, 연구비 지원에 감사드립니다.
No potential conflict of interest relevant to this article was reported.
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