1 State Key Laboratory for Swine Genetic Improvement and Production Technology, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China.
2 State Key Laboratory for Swine Genetic Improvement and Production Technology, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China. Electronic address: lushenghuang@hotmail.com.
3 State Key Laboratory for Swine Genetic Improvement and Production Technology, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China. Electronic address: binyang@live.cn.