1. National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, China
2. Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
3. National Local Joint Engineering Research Center of Livestock and Poultry, South China Agricultural University, Guangzhou, China
4. State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangzhou, China