ACKNOWLEDGEMENTS
This study was funded by grants from the State Key Laboratory of
Veterinary Etiological Biology, Lanzhou Veterinary Research Institute,
Chinese Academy of Agricultural Sciences (SKLVEB2016KFKT014), China
Postdoctoral Science Foundation (2017M610659, 2018T111113), Science and
Technology Department of Jiangxi Province (20194ABC28008), and the
Fundamental Research Funds for the Central Universities (2452019053).
The authors thank Dr. Chuang Lyu from Qingdao Jiazhi Biotechnology Co.,
Ltd. in Qingdao, Shandong province for proofreading the manuscript.