奶牛隐性乳房炎的发生规律及其致病菌的分离鉴别与药物敏感性试验

OCCURANCE REGULARITY OF DAIRY CATTLE`S SUBCLINIC MASTITIS SEPARATING PATHOGENES AND MEDICINE SENSITIZATION TEST

本文对内蒙古大黑河奶牛场的泌乳牛群进行隐性乳房炎的检测 ,及其致病菌的分离鉴别与药物敏感试验 ,其结果 :1共检测泌乳牛 2 83头次 10 78个乳区 ,隐性乳房炎的头阳性率为 6 1.84% ,乳区阳性率为 32 .2 8% ,并且其发生率与管理、挤奶卫生及其程序、泌乳期、年龄、胎次有很大关系 ;2致病菌的总检出率为 92 .31% ,其主要病原菌为金黄色葡萄球菌 ,无乳链球菌和大肠杆菌 ,分别占总检出率的 41.6 6 %、2 0 .83%和 16 .6 7%。 3对所检出的病菌 ,一些新特药物敏感性较好 ,而一些常用药物效果较次。

Experiments of Inner Mongolia Daheihe dairy farm were cmdacted to determine dairy cattle`s subclinic mastitis,separste pathogenes and medicine sensitization test(STT).The result showed:①283 dairy cattles and 1078 udder reigiones were determined,head positive incidence of subclinic mastitis took up 61.84%,udder region positive incidence was 32.28% and the incidence was connected with management,milking sanitation and program,lactifer period,age and birth obviously.②Pathogenes contained Staphly-Lococcus aureus (41.66%).S.agalactiae(20.83%)and Bacillus Coli(16.67%).The gross detectable rate was 92.31%.③The detected pathogenes were more sensitive to new and special medicines than some usual medicines.