Author details
College of Animal Science and Technology, Shandong Agricultural
University, 61 Daizong Street, Taian, Shandong Province, 271018,
China.1
Shandong Provinecial Key Laboratory of Animal Biotechnology and Disease
Control and Prevention, Taian, Shandong, 271018,
China.2
Shandong Provincial Engineering Technology Research Center of Animal
Disease Control and Prevention, Taian, Shandong, 271018,
China.3