1 State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou, 730000, China. [email protected].
2 Gansu Province Research Center for Basic Disciplines of Pathogen Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou, 730000, China. [email protected].
3 State Key Laboratory of Grassland and Agro-Ecosystems, International Centre for Tibetan Plateau Ecosystem Management, College of Ecology, Lanzhou University, Lanzhou, 730000, China.
5 College of Animal Science, South China Agricultural University, Guangzhou, 510642, China.
6 College of Animal Science, Guizhou University, Guiyang, 550025, China.
7 State Key Laboratory of Grassland and Agro-Ecosystems, International Centre for Tibetan Plateau Ecosystem Management, College of Ecology, Lanzhou University, Lanzhou, 730000, China. [email protected].