邢台市某规模化奶牛场奶牛乳房炎流行病学调查及致病菌分离鉴定

Epidemiological Investigation Bacteria Isolation and Identification of Mastitis in A large-scale Dairy Farm in Xingtai City

为调查邢台市某规模化奶牛场奶牛乳房炎流行情况,于2022年6月—2023年6月对该场4826头泌乳奶牛进行了检测。检测发现该养殖场奶牛乳房炎发病率为5.82%,其中夏季和冬季奶牛乳房炎发病率冬季和春季,且随着奶牛胎次升高,奶牛乳房炎感染率呈现上升趋势。选择80份患有乳房炎的奶牛的新鲜乳样进行细菌分离鉴定,共分离获得116株优势菌,主要为乳酸菌、葡萄球菌、链球菌、粪肠球菌和大肠杆菌等。结果表明,该奶牛场乳房炎感染率相对较低,但致病菌种类丰富,需引起重视。

In order to investigate the prevalence of mastitis in a large-scale dairy farm in Xingtai City,4826 lactating cows were tested from June 2022 to June 2023.The results showed that the positive rate of cow mastitis in this farm was 5.82%,the positive rates of which in summer and winter were higher than these in winter and spring.The infection rate of cow mastitis showed an upward trend with the parities.80 positive milk samples were selected for bacterial isolation and identification,and 116 dominant bacteria were isolated,which mainly included lactic acid bacteria,Staphylococcus,Streptococcus,Enterococcus faecalis,and Escherichia coli.The results indicate that the prevalence of mastitis in this dairy farm is relatively low,but a variety of pathogenic bacteria contribute to the mastitis in cow.