College of Animal Science and Technology Hunan Agricultural University Changsha 410128 China;
College of Animal Science and Technology Hunan Agricultural University Changsha 410128 China;
College of Animal Science and Technology Hunan Agricultural University Changsha 410128 China;
College of Animal Science and Technology Hunan Agricultural University Changsha 410128 China;
College of Animal Science and Technology Hunan Agricultural University Changsha 410128 China;
College of Animal Science and Technology Hunan Agricultural University Changsha 410128 China;
College of Animal Science and Technology Hunan Agricultural University Changsha 410128 China;