[Liu, G. H.; Li, F.; Liu, W.; Liu, Y.; Dai, R. S.] Hunan Agr Univ, Coll Vet Med, Changsha 410128, Hunan, Peoples R China.
[Lin, R. Q.; Zhu, X. Q.] S China Agr Univ, S China Agr Univ, Coll Vet Med, Guangzhou 510642, Guangdong, Peoples R China.
[Li, Z. Y.; Liu, D. X.] Gen Vet Serv Hunan Prov, Changsha 410007, Hunan, Peoples R China.
[He, S. W.] Xiangxi Nationality Vocat Tech Coll, Jishou 416000, Hunan, Peoples R China.
[Tan, M. Y.] Ctr Qual Quarantine Livestock Poultry & Aquacultu, Changsha 410006, Hunan, Peoples R China.