[Li, Zhong-Bo; Zhao, Yu; Fu, Yi-Tian; Cheng, Tian-Yin; Liu, Guo-Hua; Li, Fen] Hunan Agr Univ, Coll Vet Med, Hunan Prov Key Lab Prot Engn Anim Vaccines, Changsha 410128, Hunan, Peoples R China.
[Cheng, Tian-Yin; Liu, Guo-Hua; Li, Fen] Hunan Coinnovat Ctr Anim Prod Safety, Changsha 410128, Hunan, Peoples R China.
[Li, Zhong-Bo; Hou, Qiang-Hong; Yao, Guo-Min] HuaiHua Vocat & Tech Coll, Coll Anim Sci & Technol, Huaihua 418000, Hunan, Peoples R China.
[Zhao, Yu] Xinyang Agr & Forestry Univ, Coll Anim Sci & Vet Med, Xinyang 464000, Henan, Peoples R China.
[Zou, Feng-Cai] Yunnan Agr Univ, Coll Anim Sci & Technol, Kunming 650201, Yunnan, Peoples R China.