作者单位: | 1.College of Animal Science and Technology, China Agricultural University, Beijing100193;2.Animal Husbandry and Veterinary Research Institute, Shanxi Academy of Industry, Taiyuan030032;3.Animal Husbandry and Veterinary Station of Yimin Su Mu in Ewenki Autonomous Banner, Inner Mongolia, Hulunbuir021114;4.Animal Husbandry and Veterinary Station of Honghua Keji Town in Ewenki Autonomous Banner, Inner Mongolia, Hulunbuir021112; |