Funding for this research was provided by:
Cooperative Research Program for Agriculture Science & Technology Development (PJ01334801)
Received: 6 December 2019
Accepted: 20 May 2020
First Online: 29 May 2020
Ethics approval and consent to participate
: The care and experimental use of chickens were approved by the Institutional Animal Care and Use Committee, Seoul National University (SNU-170417-18-2).
: Not applicable.
: The authors declare no conflict of interest.