[Wang, N.; Yu, H.; Peng, T.; Liu, L.; Cai, Y.; Zhang, L.; Deng, Z.; Wang, G.; Zhan, Y.] Hunan Agr Univ, Coll Vet Med, Res Ctr Reverse Vaccinol RCRV, Prov Key Lab Prot Engn Anim Vaccines, Changsha 410128, Hunan, Peoples R China.
[Hao, Z.] Yongzhou Anim Husb & Aquat Affairs Ctr, Yongzhou 425000, Hunan, Peoples R China.
[Luo, Z.] Dingcheng Anim Husb & Aquat Affairs Ctr, Changde 415100, Hunan, Peoples R China.