1. College of Animal Science and Technology Northeast Agricultural University Harbin China
2. College of Life Sciences Northeast Agricultural University Harbin China
3. Branch of Animal Husbandry and Veterinary of Heilongjiang Academy of Agricultural Sciences Qiqihar China
4. College of Agricultural Eastern Liaoning University Dandong China
5. Yili Animal Science Research Institute Yining China
6. Animal Husbandry Administration of Huadian Huadian China