1. College of Animal Sciences and Technology and Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Tai’an, Shandong, P.R. China
2. Shandong Zhongcheng Feed Technology Co., Ltd., Feicheng, Shandong, P.R. China
3. Agriculture and Agri-Food Canada, Lethbridge Research and Development Centre, Lethbridge, Canada