Funding for this research was provided by:
Natural Science Foundation of Hebei) (C2013204130)
National Key Research Project (2016YFD0501002)
Received: 21 December 2020
Accepted: 27 July 2021
First Online: 6 August 2021
: All animal (donkeys and dogs) experiments were ethically acceptable and approved by the Animal Ethics Committee of Hebei Agricultural University (No. 2017–0012).
: Not applicable.
: All authors declare that they have no conflict of interests.