1 Key Laboratory of New Animal Drug Project of Gansu Province, Lanzhou, Gansu Province, 730050, PR China.
2 Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou, Gansu Province, 730050, PR China.
3 Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, 730050, PR China.
4 Key Laboratory of New Animal Drug Project of Gansu Province, Lanzhou, Gansu Province, 730050, PR China. infzjy@sina.com.
5 Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture, Lanzhou, Gansu Province, 730050, PR China. infzjy@sina.com.
6 Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, 730050, PR China. infzjy@sina.com.