Stark D A, Anderson N G
Can Vet J. 1990 Mar;31(3):197-201.
A case-control study was conducted to identify milking hygiene and udder therapy factors associated with a diagnosis of Nocardia mastitis in dairy herds from which milk samples are submitted to the Ontario Ministry of Agriculture and Food, Veterinary Laboratory Services, Guelph laboratory. The data were collected by telephone interview from 31 case and 31 control herds.After analytical control for confounders, blanket dry cow therapy and a dry cow antibiotic product were associated with a diagnosis of Nocardia mastitis in a herd, whereas another dry cow antibiotic product had a sparing effect.In comparison to mastitis pathogens susceptible to dry cow antibiotic therapy, Nocardia species were isolated infrequently from milk specimens submitted to the Guelph mastitis laboratory.
开展了一项病例对照研究，以确定与提交牛奶样本至安大略省农业和食品部圭尔夫兽医实验室服务处诊断为诺卡氏菌乳腺炎的奶牛群中挤奶卫生和乳房治疗因素。通过电话访谈从31个病例组和31个对照组牛群收集数据。在对混杂因素进行分析控制后，全群干奶牛治疗和一种干奶牛抗生素产品与牛群中诺卡氏菌乳腺炎的诊断相关，而另一种干奶牛抗生素产品具有保护作用。与对干奶牛抗生素治疗敏感的乳腺炎病原体相比，提交至圭尔夫乳腺炎实验室的牛奶样本中很少分离出诺卡氏菌属。
