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 Lingnan Guangdong Laboratory of Modern Agriculture, Guangzhou, China.
4 Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China.