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为了有效防治奶牛隐性乳房炎,从牛奶中分离得到4株病原菌,通过细菌培养、形态学鉴定、生理生化试验等,参照《常见细菌系统鉴定手册》鉴定为大肠埃希氏杆菌,并对分离的病原菌进行了药敏试验。结果表明:分离菌对庆大霉素、四环素和诺氟沙星高度敏感,对头孢噻吩和青霉素中度敏感,对万古霉素低度敏感,而对苯唑西林和红霉素不敏感。说明可以用庆大霉素、四环素和诺氟沙星进行奶牛隐性乳房炎的治疗。
In order to effectively prevent recessive mastitis in dairy cows, four pathogens were isolated from milk and identified as Escherichia coli by bacterial culture, morphological identification, physiological and biochemical tests and the like, Of the pathogenic bacteria susceptibility testing. The results showed that the isolates were highly sensitive to gentamicin, tetracycline and norfloxacin, moderately sensitive to cefalotin and penicillin, low sensitive to vancomycin, and insensitive to oxacillin and erythromycin. Description can be gentamicin, tetracycline and norfloxacin dairy cow recessive mastitis treatment.