Text and Data Mining valid from 2019-08-05
Received: 17 August 2018
Accepted: 20 June 2019
First Online: 5 August 2019
Ethics approval and consent to participate
: Advance approval was acquired from the Institutional Animal Care and Use Committee of the National Institute of Animal Science, of the Rural Development Administration, of South Korea (Approval numbers: 2016–177).
: Not applicable.
: The authors declare that they have no competing interests.