病原: 組織鞭毛蟲 His...
Chickens 4–6 weeks old are most susceptible to infection,
although turkeys of any age are highly susceptible.
Diseases of Poultry, 13th edition, page 1175.
35.雞對黑頭病之最敏感年齡為下列何者? (A)1週齡內 (B)4-6週齡 ..-阿摩線上測驗