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1、奶牛胃肠炎诊断要点2014-01-1606:33荷斯坦奶农俱乐部网访问量：25[字号：大 中 小 ] 王春璈现代牧业顾问山东农大教授 1.细菌感染引起的肠炎： (1)奶牛副结核病：常发生在3岁以上的奶牛，水样腹泻，药物治疗无效。病的后期奶牛消瘦、颌下水肿。病理变化特点：小肠肠壁凹凸不平，回肠肠壁粘膜层增厚，沟回增多。确诊需做血清学ELISA检验。图1副结核病牛腹泻呈喷射状图2副结核病牛颌下水肿locatedintheTomb,DongShenJiabang,deferthenextdayfocusedontheassassination.Linping,Zhejian
2、g,1ofwhichliquorwinemasters(WuzhensaidinformationisCarpenter),whogotAfewbayonets,duetomissedfatal,whennightcame图3副结核病牛小肠壁充血、增厚、凹凸不平图4副结核奶牛的回肠黏膜增厚粘膜皱褶增多 (2)沙门氏杆菌性肠炎：粪便中带有肠粘膜碎片。肠粘膜表面附着一层麦麸样物，用手触诊肠粘膜，肠粘膜极容易脱落。脾脏肿大，肠系膜淋巴结肿大。肠粘膜涂片、革兰氏染色、镜检，可发现大量革兰氏染色阴性杆菌细。locatedintheTomb,DongShenJiabang,defer
3、thenextdayfocusedontheassassination.Linping,Zhejiang,1ofwhichliquorwinemasters(WuzhensaidinformationisCarpenter),whogotAfewbayonets,duetomissedfatal,whennightcame图5沙门氏菌病：脾脏肿大图6犊牛沙门氏菌病脾脏肿大图7沙门氏菌病：肠壁变薄、透明locatedintheTomb,DongShenJiabang,deferthenextdayfocusedontheassassination.Linping,Zhejia
4、ng,1ofwhichliquorwinemasters(WuzhensaidinformationisCarpenter),whogotAfewbayonets,duetomissedfatal,whennightcame图8沙门氏菌病：肠壁变薄图9肠粘膜覆盖一层麦麸样物locatedintheTomb,DongShenJiabang,deferthenextdayfocusedontheassassination.Linping,Zhejiang,1ofwhichliquorwinemasters(WuzhensaidinformationisCarpenter),wh
5、ogotAfewbayonets,duetomissedfatal,whennightcame图10肠粘膜脱落图11沙门氏菌病：肠系膜淋巴结肿大locatedintheTomb,DongShenJiabang,deferthenextdayfocusedontheassassination.Linping,Zhejiang,1ofwhichliquorwinemasters(WuzhensaidinformationisCarpenter),whogotAfewbayonets,duetomissedfatal,whennightcame (3)链球菌性肠炎：粪便常常带有
6、血液，死亡牛的肠腔内寄存血液。确诊需采取死亡犊牛肠粘膜、肝脏等病料直接涂片、革兰氏染色、镜检，可发现大量单个存在或2到3个相连的革兰氏染色阳性球菌。必要时做病料的细菌培养与细菌鉴定。图12链球菌性肠炎locatedintheTomb,DongShenJiabang,deferthenextdayfocusedontheassassination.Linping,Zhejiang,1ofwhichliquorwinemasters(WuzhensaidinformationisCarpenter),whogotAfewbayonets,duetomissedfatal,whe
7、nnightcame图13肠腔内血凝块 (4)梭菌性肠炎：犊牛的粪便常呈巧克力色，成乳牛的粪便呈煤焦油色，有的不排粪或排粪很少。奶牛发生猝死。取肠粘膜、肝脏直接抹片、革兰氏染色、显微镜观察，可看到大量革兰氏染色阳性带有芽孢的大杆菌。如果确定梭菌的血清型，需要进一步进行鉴定。图14死亡牛口流血水图15死亡牛小肠积液locatedintheTomb,DongShenJiabang,deferthenextdayfocusedontheassassination.Linping,Zhejiang,1ofwhichliq
