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