1. Guangdong Laboratory of Lingnan Modern Agriculture Guangdong Province Key Laboratory of Animal Nutritional Regulation and National Engineering Research Center for Breeding Swine Industry College of Animal Science South China Agricultural University Guangzhou China
2. State Key Laboratory of Livestock and Poultry Breeding Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South China Guangdong Key Laboratory of Animal Breeding and Nutrition Maoming Branch Guangdong Laboratory for Lingnan Modern Agriculture Institute of Animal Science Guangdong Academy of Agricultural Sciences Guangzhou China