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禽类维生素D缺乏症症状是什么
更新时间: 2019-01-11 00:00:00  

症状。雏鸡维生素D<sub>3</sub>缺乏时,最早可在10 ~ 11日 龄出现症状,表现为生长迟缓,行走吃力,左右摇摆,喜蹲 伏,喙、爪软如橡皮,羽毛粗乱,常长出不正常的粗毛。母鸡 在缺乏后2 ~3个月出现症状,最初是薄壳蛋数增多,随后产 蛋量显著下降,孵化率低,双脚无力,呈特殊的企鹅式 蹲势。

关键词: 禽类 维生素 缺乏症 症状 什么

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