Watts J L
Mastitis Research Laboratory, Louisiana State University Agricultural Center, Homer 71040.
J Dairy Sci. 1988 Jun;71(6):1616-24. doi: 10.3168/jds.S0022-0302(88)79725-8.
A total of 317 gram-positive, catalase-negative cocci isolated from bovine mammary glands were characterized and identified using current species descriptions. Two hundred eighty-seven isolates (90.5%) could be placed in 11 distinct species. Streptococcus uberis was the most frequently encountered species and could be separated into two previously described genetic types based upon sucrose utilization. Streptococcus dysgalactiae and a newly described species, Streptococcus saccharolyticus, were the most frequently isolated organisms from teat canal swabs. Thirty isolates could not be placed in currently described species. A proposed identification scheme based upon serological grouping and seven biochemical tests would permit 24 h identification of streptococci isolated from bovine mammary glands.
从牛乳腺中分离出317株革兰氏阳性、过氧化氢酶阴性球菌，利用当前的菌种描述对其进行了特征鉴定。287株分离菌（90.5%）可归为11个不同的菌种。乳房链球菌是最常见的菌种，根据蔗糖利用情况可分为两种先前描述的基因类型。停乳链球菌和一个新描述的菌种——解糖链球菌，是从乳头管拭子中最常分离出的微生物。30株分离菌无法归入目前已描述的菌种。一种基于血清学分群和七项生化试验的鉴定方案可在24小时内鉴定从牛乳腺中分离出的链球菌。
