Received: 13 April 2020
Accepted: 23 August 2020
First Online: 12 October 2020
Ethics approval and consent to participate
: The study was reviewed and approved by the Institutional Animal Care and Use Committee at the College of Animal Science of Shandong Agriculture University, and carried out following the “Guidelines for Experimental Animal” of Ministry of Science and Technology (Beijing, P. R. China).
: All of the authors have approved the final version of the manuscript and agreed with this submission to the Journal of Animal Science and Biotechnology.
: The authors declare that they have no competing interests.