Funding for this research was provided by:
National Key Research and Development Programme of China. ((2018YFC0840403))
Received: 18 May 2019
Accepted: 18 October 2019
First Online: 25 October 2019
Ethics approval and consent to participate
: The protocols were approved by the Institutional Animal Care and Use Committee of the Shanghai Veterinary Research Institute and authorized by the Animal Ethical Committee of Shanghai Veterinary Research Institute (Approval number SHVRI-MO-2018010021).
: Not applicable.
: The authors declare that they have no competing interests.