一起奶牛破伤风感染的诊断及防治报告

A Report of Tetanus Infection in CowsDiagnosis and Control

奶牛破伤风病,在上海地区规模化养殖牧场极少发生。2017年7月,我中心接报某奶牛场6头青年母牛陆续死亡,年龄在6-16月龄之间,患牛病程短,死亡率极高,场主高度怀疑为传染病致死。病牛精神沉郁,体温多数正常,仅在后期快速升高,基本无食欲,并表现出瞬膜外露、颈背僵硬、尾部震颤等神经类症状。由于病因不明,初期症状不明显,牧场兽医采取普通抗生素治疗,效果不佳。通过紧急流行病学调查、临床症状鉴别、病理解剖等方法,临床诊断为奶牛破伤风梭菌感染。经采取破伤风抗毒素治疗、镇静解痉和强心补液等标本兼治措施,结合抗生素、中药灌服等辅助治疗,发病症状逐渐缓解,大部分病牛在一周左右基本痊愈,未出现新的死亡病例。

Cow tetanus is rare in large-scale farms of Shanghai. In July of 2017, six young cows from a dairy farm,ages of 6 and 16 months, were reported to have died. Because of short onset time and extremely high-death rate, the death was highly suspected from infectious diseases by farmers. The infected cows are depressed, their body temperatures are mostly normal ex- cept the later period of rapid elevation, lack for appetite with the expression of the instant membrane, the neck, the stiffness, the tail tremor and other neurological symptoms. Due to unknown etiology, the initial symptoms were not obvious. And it was not effective for ranching veterinarians to treated the disease with common antibiotics. By means of emergency epidemiological investigation, clinical symptom identification, pathological anatomy and other methods, clostridium tetani infection was con- firmed. In combination with antibiotics, Chinese medicine irrigation and other auxiliary treatment, after measures with tetanus antitoxin, calm spasmolysis and curing, these symptoms gradually ease,most cattle healed in a week or so and there are not new deaths.