Funding for this research was provided by:
Ministry of Agriculture, Food and Rural Affairs, Republic of Korea and Hankyong National University (20093068)
Received: 13 May 2020
Accepted: 27 October 2020
First Online: 2 December 2020
Ethics approval and consent to participate
: DNA samples were obtained from semen and/or blood samples collected by veterinarians. Ethics committee approval was not required for semen and blood collection, as they were collected specifically in this study from the Hanwoo Improvement Center (HIC) of the National Agricultural Cooperative Federation, which was involved as a partner in this research project.
: Not applicable.
: The authors declare that they have no competing interests.