Epidemiological Investigation Bacteria Isolation and Identification of Mastitis in A large-scale Dairy Farm in Xingtai City
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 indi-cate that the prevalence of mastitis in this dairy farm is relatively low,but a variety of pathogenic bacteria contribute to the mastitis in cow.
Dairy cow mastitisPrevalence surveyIsolation and identification of pathogenic bacteriaLarge scale dairy farm
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