[1] CAAS, Lanzhou Vet Res Inst, Key Lab Vet Parasitol Gansu Prov, Dept Parasitol,State Key Lab Vet Etiol Biol, Lanzhou 730046, Gansu Province, Peoples R China
[2] Guangdong Ocean Univ, Coll Agr, Dept Vet Med, Zhanjiang, Guangdong, Peoples R China
[3] Sichuan Prov Ctr Anim Dis Prevent & Control, Chengdu, Sichuan Prov, Peoples R China
[4] S China Agr Univ, Dept Parasitol, Coll Vet Med, Guangzhou, Guangdong, Peoples R China