Funding for this research was provided by:
Programs for Changjiang Scholars and Innovative Research in Universities (IRT_15R62)
China Agriculture Research Systems (CARS_40)
Received: 12 December 2019
Accepted: 23 January 2020
First Online: 2 April 2020
Ethics approval and consent to participate
: All procedures involving chicken were approved by the Animal Care and Use Committee of China Agricultural University.
: All of the authors have approved the final version of the manuscript, agree with this submission to Journal of Animal Science and Biotechnology.
: The authors declare that they have no competing interests.