1. Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry Institute of Subtropical Animal Nutrition and Feed, College of Animal Science, South China Agricultural University Guangzhou China
2. Guangdong Yihao Foodstuffs Co. Ltd Guangzhou China
3. National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production Institute of Subtropical Agriculture, Chinese Academy of Sciences Changsha China