1. Department of Animal Genetics and Breeding, College of Animal Science and Technology, Shandong Agricultural University, Tai’an, Shandong, China
2. Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai’an, Shandong, China
3. Key Laboratory of Efficient Utilization of Non-grain Feed Resources (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Tai’an, Shandong, China