永利棋牌鸡支原体病的诊治

鸡支原体病发病率越来越高,本病在鸡群中断续发生,本病易复发、易并发感染,鸡支原体病发病率越来越高,霉形体病是由霉形体引起的鸡的一种慢性呼吸道消耗性传染病,如鸡舍通风不良、氨气浓度过高、鸡群密度过大、潮湿拥挤和疫苗免疫应激、营养缺乏、气候突变及其他疾病继发
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Published on April 03, 2020 21:21
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