Funding for this research was provided by:
National Natural Science Foundation of China (31460686)
Received: 15 October 2020
Accepted: 1 October 2021
First Online: 13 October 2021
: The study was approved (Approval No. A2014–079-03) by the Ethics Committee for Experimental Animal of the First Affiliated Hospital, School of Medicine, Shihezi University. Both the sellers of Bbs and Ahs firmly believed our research have important implications for preventing ovine pneumonia, so they sold their sheep to us at a low price as an expression of support to our study.
: Not applicable.
: No competing interests exist.