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| egg drop syndrome ： ウィキペディア英語版 |
egg drop syndrome
Egg drop syndrome is a viral disease of birds, notably chickens, ducks, geese and swans. The phrase "egg drop" refers to the drop in egg production, which is how the disease is usually detected, clinical signs being unreliable. The disease results in thin-shelled or shell-less eggs being laid.
==Agent==
The causal agent is ''Duck adenovirus 1'', an adenovirus in the genus ''Atadenovirus''.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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