1Academy of Animal Science and Veterinary Medicine, Qinghai University, Xining, People’s Republic of China, 2College of Life Science and Technology, Southwest University for Nationalities, Chengdu, People’s Republic of China, 3College of Agricultural and Animal Husbandry, Qinghai University, Xining, People’s Republic of China, 4Department of Biosciences, Qinghai University, Xining, People’s Rep...