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立秋注意預防雞球蟲病

發布時間:2016-08-20  作者:金地市場部  瀏覽次數:308

夏秋交替時節是一年中雞球蟲病高發期,該病一旦發生,即使治療及時,也會造成很大的經濟損失。因此,做好預防非常關鍵。   發病特點該病一般發生于每年的6~10月份,因為這段時間高溫高濕,比較適合球蟲生長發育,3~5周齡的雛雞最易感染。成年雞對球蟲也較敏感,只是發病癥狀較輕。病雞是本病的傳染源,被病雞污染的飼料、飲水、用具均有蟲卵存在。雞吃進感染了的卵囊是主要傳播途徑,蒼蠅、鼠類均為機械性傳播媒介。雞抵抗力下降,飼料中維生素A、維生素K缺乏、營養不良均可誘發此病。   臨床癥狀及眼觀病變盲腸球蟲特征典型,較易確診。發病雞雞冠發白,精神萎靡,擁擠在一起,翅膀下垂,羽毛松立,排出帶有血液的稀糞或排出的全是血液,病情發展很快,2~3日可出現死亡,治療不及時,雛雞死亡率高達50%以上。剖檢可見全身有明顯的貧血癥狀,肌肉或全身臟器的顏色偏淡。內臟病變主要在盲腸膨大,比正常粗幾倍,成暗紅色,剪開盲腸,可見腸壁增厚,內容物為血液和血凝塊。小腸球蟲主要病變在小腸前段,腸腔擴張,腸漿膜充血并密布粟粒大出血點,腸壁變厚,腸粘膜充血及壞死。   預防措施育雛禁止平養,一律雞籠喂養。進雛雞前一定要對育雛室進行徹底全面的消毒。地面、雞籠、水槽、料槽反復用熱堿水沖洗消毒。做好日常環境衛生工作,雞場內的糞便及時清理并運往遠處做無害化處理。每周消毒2~3次,舍內保持干燥,做好保濕及通風工作,給雞群創造一個良好舒適的環境。加強飼養管理,提高機體抵抗力,合理搭配日糧,保障正常營養需要。幼年雞維生素K的需要量最高,維生素A、維生素D補充充足,對減少該病的發生有很大作用。另外,雛雞20日齡可投1次預防藥物,連用3天,在環境威脅嚴重的地區,40日齡再投服1次。   治療措施一旦發生該病,可采取藥物治療,許多藥物對該病有效,但必須結合消毒和清糞工作。蟲卵在潮濕的糞便中可長時間生存,并且消毒藥對它作用甚微,所以必須每日清糞,清干凈后用火堿水沖刷糞板,然后再用生石灰鋪墊。   營養補充也很重要,多種維生素倍量使用,堅持10日左右可徹底清除該病。   常用治療藥物有氯吡醇、磺胺喹啉、氯本胍、球痢靈、青霉素等。應有計劃地交替使用或聯合使用,療程要足,盡量一次治愈,以免產生耐藥性,給再次治療造成更大的麻煩。

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