天气预报 > 其他 > 呼吸型禽类传染性支气管炎病临床症状是什么
呼吸型禽类传染性支气管炎病临床症状是什么
更新时间: 2019-01-11 00:00:00  

呼吸型:鸡群中突然出现有呼吸道病状的病鸡,随 后全群发病,表现为精神沈郁,怕冷,喜挤堆,张口呼吸,不 时伸颈,打喷嚏,从喉部发出咕噜咕噜的声音,有时还有尖锐的鸣叫声、咳嗽声,夜晚安静时更加明显,减食,生长速 度降低。发病雏鸡可见流鼻液,母雏输卵管损伤、发炎、堵 塞,形成永久性狭窄,育成后不能产蛋;成年鸡感染引起产 蛋量降低,严重时可下降50%,蛋品质降低,蛋清稀薄如 水,出现软壳蛋、畸形蛋、粗壳蛋,6〜8周才能恢复。

关键词: 呼吸 禽类 传染性 支气管炎 临床 症状 什么

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