Wilson D J, Gonzalez R N, Sears P M
Quality Milk Promotion Services, College of Veterinary Medicine, Cornell University, Ithaca, NY 14850, USA.
J Dairy Sci. 1995 Sep;78(9):2083-5. doi: 10.3168/jds.S0022-0302(95)76834-5.
Dairy herds (n = 76) with an initial prevalence of Staphylococcus aureus IMI > or = 10% were included in this study. Criteria were that herds did not change teat dipping or dry cow treatment practices, did not segregate cows that were positive for S. aureus at the initial visit, and did not cull > 50% of cows found to be positive on the initial visit. During a follow-up period (6 to 24 mo), segregation or separate milking of cows that were positive for S. aureus reduced prevalence from 29.5 to 16.3% and bulk tank SCC from 600,000 to 345,000/ml. Prevalence of S. aureus mastitis was unchanged for herds that did not segregate cows with S. aureus, 22.5 to 20.2%, and the reduction in SCC from 698,000 to 484,000 for nonsegregated herds was also smaller. Segregation of cows that were known to be positive for S. aureus is an effective mastitis control practice.
初始金黄色葡萄球菌隐性乳房炎患病率≥10%的奶牛群（n = 76）被纳入本研究。标准为牛群不改变乳头药浴或干奶期治疗方法，初次访查时不对金黄色葡萄球菌检测呈阳性的奶牛进行隔离，且初次访查时发现阳性的奶牛淘汰率不超过50%。在随访期（6至24个月）内，对金黄色葡萄球菌检测呈阳性的奶牛进行隔离或单独挤奶，患病率从29.5%降至16.3%，奶罐体细胞数从600,000个/毫升降至345,000个/毫升。对于未对金黄色葡萄球菌检测呈阳性的奶牛进行隔离的牛群，金黄色葡萄球菌乳腺炎患病率未变，为22.5%至20.2%，且未隔离牛群的体细胞数从698,000个/毫升降至484,000个/毫升的降幅也较小。对已知金黄色葡萄球菌检测呈阳性的奶牛进行隔离是一种有效的乳房炎防控措施。
