Funding for this research was provided by:
Natural Science Foundation of Inner Mongolia (2019ZD03)
Received: 16 October 2019
Accepted: 13 March 2020
First Online: 28 April 2020
Ethics approval and consent to participate
: All procedures involving animals were approved and authorized by the Inner Mongolia Agricultural University. The animals used in our study were consented by their owners.
: Not applicable.
: The authors declare that they have no competing interests.