<cite id="j1lv3"><noframes id="j1lv3">
<cite id="j1lv3"><span id="j1lv3"></span></cite>
<thead id="j1lv3"><dl id="j1lv3"><thead id="j1lv3"></thead></dl></thead>
<ins id="j1lv3"></ins>
<thead id="j1lv3"><dl id="j1lv3"><listing id="j1lv3"></listing></dl></thead>
<cite id="j1lv3"><ruby id="j1lv3"></ruby></cite>
<thead id="j1lv3"><dl id="j1lv3"><listing id="j1lv3"></listing></dl></thead>
<var id="j1lv3"><ruby id="j1lv3"></ruby></var>
<del id="j1lv3"></del>
<cite id="j1lv3"><span id="j1lv3"><listing id="j1lv3"></listing></span></cite>
<ins id="j1lv3"><dl id="j1lv3"><thead id="j1lv3"></thead></dl></ins>
<del id="j1lv3"></del>
<cite id="j1lv3"><dl id="j1lv3"></dl></cite>
<ins id="j1lv3"></ins><ins id="j1lv3"></ins>
<thead id="j1lv3"><dl id="j1lv3"><listing id="j1lv3"></listing></dl></thead>
<cite id="j1lv3"></cite>
<cite id="j1lv3"></cite>
<ins id="j1lv3"><dl id="j1lv3"><listing id="j1lv3"></listing></dl></ins>
<ins id="j1lv3"></ins><listing id="j1lv3"><dl id="j1lv3"></dl></listing>
<ins id="j1lv3"><noframes id="j1lv3"><ins id="j1lv3"></ins><ins id="j1lv3"><dl id="j1lv3"></dl></ins>
<del id="j1lv3"></del>
<thead id="j1lv3"><dl id="j1lv3"><thead id="j1lv3"></thead></dl></thead>
<thead id="j1lv3"><dl id="j1lv3"><thead id="j1lv3"></thead></dl></thead>
<cite id="j1lv3"><noframes id="j1lv3">
<listing id="j1lv3"><dl id="j1lv3"></dl></listing>
<cite id="j1lv3"><dl id="j1lv3"></dl></cite><thead id="j1lv3"></thead><cite id="j1lv3"><span id="j1lv3"></span></cite>
<ins id="j1lv3"><strike id="j1lv3"><thead id="j1lv3"></thead></strike></ins>
<listing id="j1lv3"><ruby id="j1lv3"><progress id="j1lv3"></progress></ruby></listing>
<ins id="j1lv3"></ins><del id="j1lv3"></del>
<ins id="j1lv3"></ins>
<ins id="j1lv3"><noframes id="j1lv3"><ins id="j1lv3"></ins>
<ins id="j1lv3"><dl id="j1lv3"></dl></ins>
<cite id="j1lv3"><ruby id="j1lv3"></ruby></cite><ins id="j1lv3"></ins>
您當前的位置:首頁>信息動態 >學習中心>技術資料

養豬百科| 結核病

來源:m.boolounge.com 發布時間:2021/10/26 9:46:08

結核病是多種家畜、家禽、野生動物及人的慢性傳染病。病的特征是在某些器官形成結核結節,病程較長者結節中心干酪樣壞死(如豆腐渣樣)或鈣化。豬結核病的病原體是禽型結核桿菌、牛型結核桿病和人型結核桿菌。結核桿菌是一種纖細的小桿菌,呈革蘭氏染色陽性,具有抗酸染色的特性。結核桿菌因含有豐富的脂類,因此,對外界因素的抵抗力很強,在水、土壤、糞便中能生存5個月以上,常用消毒藥可將其殺死。


●診斷要點:

結核病豬生前無明顯癥狀,依據死后剖檢變化才能確診,必要時可做結核菌素試驗和顯微鏡檢查。


(一)流行特點


結核病的易感動物很多(包括50種哺乳動物和25種禽類),比較易感的是牛、豬、雞和人。豬得結核病主要由于與結核病人、牛和雞直接或間接接觸,特別是結核病在這些動物中流行時。比如在豬舍內養雞,用雞糞喂豬,以雞用過的鋸木屑(墊料)墊豬舍,利用結核病院殘羹喂豬,未經消毒的結核病牛肉和乳品等直接給豬吃,都可以感染結核病。一般呈散發。發病率和病死率不高。


(二)病理變化


豬結核病常通過消化道傳染,其病灶大多數局限于咽部、頸部及腸系膜的淋巴結。病灶的數量和大小不等,有的只有幾個小的干酪樣壞死灶,有的整個淋巴結呈彌漫性腫大。有的只侵害一組淋巴結,有的波及許多淋巴結。豬的全身性結核病甚少見偶爾可在肝、脾、肺、腎及許多淋巴結見到結核病變。結核病灶的特征為特異性肉芽腫,結節堅實、隆起,呈灰色或灰黃色,中心干酪樣壞死或鈣化,周圍界限較明顯。呈彌漫性增生者無明顯的干酪樣壞死,周圍界限也不明顯。


(三)結核菌素試驗

用牛型結核菌素和禽型結核菌素各0.1毫升分別同時注射于兩側耳根皮內,經48-72小時觀察注射部位的反應,任何一側局部發紅腫脹,均可判為陽性。多用于豬群檢疫。


久久av人妻一区二区三区|欧美日韩性久久久久久久|久久riAV国产精品|无码专区国产精品第一页
<cite id="j1lv3"><noframes id="j1lv3">
<cite id="j1lv3"><span id="j1lv3"></span></cite>
<thead id="j1lv3"><dl id="j1lv3"><thead id="j1lv3"></thead></dl></thead>
<ins id="j1lv3"></ins>
<thead id="j1lv3"><dl id="j1lv3"><listing id="j1lv3"></listing></dl></thead>
<cite id="j1lv3"><ruby id="j1lv3"></ruby></cite>
<thead id="j1lv3"><dl id="j1lv3"><listing id="j1lv3"></listing></dl></thead>
<var id="j1lv3"><ruby id="j1lv3"></ruby></var>
<del id="j1lv3"></del>
<cite id="j1lv3"><span id="j1lv3"><listing id="j1lv3"></listing></span></cite>
<ins id="j1lv3"><dl id="j1lv3"><thead id="j1lv3"></thead></dl></ins>
<del id="j1lv3"></del>
<cite id="j1lv3"><dl id="j1lv3"></dl></cite>
<ins id="j1lv3"></ins><ins id="j1lv3"></ins>
<thead id="j1lv3"><dl id="j1lv3"><listing id="j1lv3"></listing></dl></thead>
<cite id="j1lv3"></cite>
<cite id="j1lv3"></cite>
<ins id="j1lv3"><dl id="j1lv3"><listing id="j1lv3"></listing></dl></ins>
<ins id="j1lv3"></ins><listing id="j1lv3"><dl id="j1lv3"></dl></listing>
<ins id="j1lv3"><noframes id="j1lv3"><ins id="j1lv3"></ins><ins id="j1lv3"><dl id="j1lv3"></dl></ins>
<del id="j1lv3"></del>
<thead id="j1lv3"><dl id="j1lv3"><thead id="j1lv3"></thead></dl></thead>
<thead id="j1lv3"><dl id="j1lv3"><thead id="j1lv3"></thead></dl></thead>
<cite id="j1lv3"><noframes id="j1lv3">
<listing id="j1lv3"><dl id="j1lv3"></dl></listing>
<cite id="j1lv3"><dl id="j1lv3"></dl></cite><thead id="j1lv3"></thead><cite id="j1lv3"><span id="j1lv3"></span></cite>
<ins id="j1lv3"><strike id="j1lv3"><thead id="j1lv3"></thead></strike></ins>
<listing id="j1lv3"><ruby id="j1lv3"><progress id="j1lv3"></progress></ruby></listing>
<ins id="j1lv3"></ins><del id="j1lv3"></del>
<ins id="j1lv3"></ins>
<ins id="j1lv3"><noframes id="j1lv3"><ins id="j1lv3"></ins>
<ins id="j1lv3"><dl id="j1lv3"></dl></ins>
<cite id="j1lv3"><ruby id="j1lv3"></ruby></cite><ins id="j1lv3"></ins>