The results showed that the recessive mastitis of the cows was minly caused by Staphylococcus, Streptococcus and E. coli结果表明，导致奶牛隐性乳房炎的主要致病菌有葡萄球菌属、链球菌属、肠杆菌属，其中金黄色葡萄球菌和表皮葡萄球菌共71株，占55.04%；牛链球菌18株，占13.95%；大肠杆菌1株，占0.78%。