奶牛隐性乳腺炎病原菌的分离鉴定

Isolation and Identification of Bovine Subclinic Mastitis Pathogens

从2002年10月起,应用LMT从西安及其周边地区184个乳区的1000头奶牛中抽取了48头,进行奶牛隐性乳腺炎的调查及病原菌的分离鉴定。结果西安及其周边地区患隐性乳腺炎奶牛占总头数的66.7%,患隐性乳腺炎乳区占总乳区的35.4%。4个乳区全阳性者占15.2%。共检出细菌67株,其中金黄色葡萄球菌占总检出菌41.8%。链球菌占总检出菌29.9%。G+杆菌与G-杆菌各3株,分别占总检出菌4.5%。

We have investigated infection ratio of dairy subclinical mastitis in xi′an area of China since Oct.2002.We got 48 samples from 1 000 cows and diagnosed those total 184 quarters by LMT and SCC.The results revealed cow infected subclinical mastitis total to 66.7%.Quarters infected sublinical mastitis total to 35.4%.Cow uninfected total to 61.2%.subclinical mastitis only total to 16.7%.We isolated 67 strains of pathogens including 41 strains of Staphylococcus,total to 41.8%.20 strains of streptococcus ,total to 29.9%.3 strains of G^+ bacteria,total to 4.5%.3 strains of G^- bacteria ,total to 4.5%.