Do Hyun Kim, Jae Don Oh, and Hak Kyo Lee*
Dept of Animal Biotechnology, Jeonbuk National University, Jeonju 54896, Korea
Correspondence to Hak-Kyo Lee, E-mail: breedlee@jbnu.ac.kr
Volume 6, Number 1, Pages 11-18, March 2022.
Journal of Animal Breeding and Genomics 2022, 6(1), 11-18. https://doi.org/10.12972/jabng.20220002
Received on December 16, 2021, Revised on January 07, 2022, Accepted on February 22, 2021, Published on March 31, 2022.
Copyright © 2022 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).
Although the Hanwoo industry has been systematically improved at the national level, recently, the improvement of Hanwoo cows at the farm level is insufficient, acting as a factor to increase the dependence on KPN(Korea Proven Bull’s Number) . In this study, the breeding value and accuracy estimated according to the pedigree depth were evaluated in order to present basic data for the evaluation of the genetic ability of Hanwoo and the utilization of Hanwoo farm information through the establishment of an efficient regional Hanwoo cow improvement system using Hanwoo farm information. To establish a reference group, a database was established by collecting information on slaughtered Hanwoo and shipped from Jeollabuk-do for 5 to 10 years, as well as information on breeding Hanwoo cows in the area subject to breeding value evaluation. According to the pedigree depth, the evaluated groups were classified into three groups: 1 group 1-2 generations, 2 groups 2-3 generations, and 3 groups 3 generations or more. Looking at the analysis results by group, Carcass weight (CWT), Eye muscle area (EMA), Backfat thickness (BFT), Marbling score (MSC) were 12.676 kg, 3.932 cm2, 0.113 mm, 0.605 points for group 1, and 14.632 kg, 4.643 cm2, 0.110 mm, 0.758 points for group 2 , in the case of group 3, 15.892 kg, 4.909 cm2, 0.171 mm, 0.824 points were indicated. It was found that as the pedigree depth increased, the average of the breeding value also increased. As a result of analysis accuracy, CWT, EMA, BFT, MSC were 0.428, 0.419, 0.425, 0.430 for group 1, 0.471, 0.463, 0.468, 0.472 for group 2, and 0.476, 0.469, 0.474, 0.478 were shown. When looking at the difference between groups by pedigree depth, it was found that the difference in accuracy between group 1 and group 2 was about 0.05, while the difference in accuracy between group 2 and group 3 was about 0.005. This is because the increase in accuracy is stagnant as the pedigree depth goes to 3 or more generations. It is considered that it can be used as basic data for farm information management.
Pedigree depth, Breeding value, Accuracy of evaluation, Hanwoo, Genetic improvement system
본 논문은 농촌진흥청(PJ01621803)의 지원에 의해 이루어 졌으며, 전라북도에서 시행하는 전라북도 고능력 암소축군사업의 일환으로 수행 되었다.
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