S China Agr Univ, Coll Vet Med, Guangzhou 510642, Guangdong, Peoples R China.
Jiangsu Anim Husb & Vet Coll, Dept Vet Sci, Taizhou 225300, Jiangsu, Peoples R China.
Guangzhou Airport Entry Exit Inspect & Quarantine, Gen Lab Inspect & Quarantine, Guangzhou 510406, Guangdong, Peoples R China.
Hunan Agr Univ, Coll Anim Sci & Technol, Changsha 410128, Peoples R China.
Sun Yat Sen Univ, Sch Life Sci, Guangzhou 510275, Guangdong, Peoples R China.