本文通过临床病史、尸体剖检、组织病理学、血液涂片以及肺脏触片方法综合诊断了1 例病死奶牛曲霉菌病。病牛表现为喜卧、精神沉郁、体温升高。尸体剖检可见下颌淋巴结肿大,心外膜、心内膜出血,肺脏尖叶实变、肺脏表面可见大小不等脓肿结节,真胃胃壁可见出血性坏死灶、真胃黏膜弥散分布小溃疡灶。组织病理学可见肺组织内大小不等霉菌性结节,结节内分布大量曲霉菌菌丝,真胃肌层以及黏膜下层表现为坏死性变化、坏死灶内可见曲霉菌丝。血涂片以及肺脏触片可见血液和肺组织内中性粒细胞增多。综合判断本病例为饲喂发霉玉米引起奶牛的曲霉菌病,因此应加强奶牛的饲养管理,减少曲霉菌病的发生。
A case of bovine aspergillosis was diagnosed by clinical history,postmortem examination,histopathology and blood and lung smear.The sick cattle showed sleepiness,depression and elevated body temperature.Postmortem examination showed mandibular lymph node enlargement,epicardial and endocardial hemorrhage,apical lobe of the lung and abscess nodules of different sizes on the surface of the lung,hemorrhagic necrosis and small ulcers scattered in the gastric mucosa of the true stomach.The histopathology showed that there were large and small mycotic nodules in the lung tissue,with a large number of aspergillus mycelia distributed in the nodules,necrotic changes in the musculi of the stomach and the submucosa,and aspergillus filaments in the necrotic foci.Blood smear and pulmonary contact film showed neutrophilia in the blood and lung tissue.The results of this study indicate that feeding moldy corn forage may cause bovine aspergillosis,so cattle feeding management should be strengthened to reduce the occurrence of aspergillosis.
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