【单选题】【消耗次数：1】
近年来在我国鸭场流行、以产蛋下降为主要特征的鸭传染病是
①
鸭瘟
②
鸭坦布苏病毒病
③
鸭副黏病毒病
④
鸭病毒性肝炎
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【单选题】
2010年以来，我国福建、浙江、安徽、江苏等地规模化鸭场出现以产蛋鸭产蛋下降为主要特征的鸭传染病。经病原分离和实验室检测，最终确定其致病原为
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禽流感病毒H5N1
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鸭呼肠孤病毒
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鸭坦布苏病毒（鸭黄病毒）
⑤
减蛋综合征病毒
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