Ferns L, Dohoo I, Donald A
Can Vet J. 1991 Nov;32(11):673-7.
A case-control study was conducted to identify herd production, housing, and hygienic and therapeutic factors associated with a diagnosis of Nocardia mastitis in dairy herds in Nova Scotia. The data were collected by on-farm interviews with owners of 54 case and 54 control herds.Logistic regression was used to study risk factors. The use of dry cow products containing neomycin, including two specific dry cow products, was strongly associated with a diagnosis of Nocardia mastitis in a herd. Other factors which increased the risk of Nocardia mastitis were higher levels of production, larger herd size, and a large percentage of cows treated with dry cow products. These results are compared to results from a similar study carried out in Ontario.
开展了一项病例对照研究，以确定与新斯科舍省奶牛场诺卡氏菌乳腺炎诊断相关的畜群生产、饲养环境以及卫生和治疗因素。通过对54个病例畜群和54个对照畜群的所有者进行农场访谈收集数据。采用逻辑回归分析研究风险因素。使用含新霉素的干奶牛产品，包括两种特定的干奶牛产品，与畜群中诺卡氏菌乳腺炎的诊断密切相关。增加诺卡氏菌乳腺炎风险的其他因素包括较高的生产水平、较大的畜群规模以及接受干奶牛产品治疗的奶牛比例较高。将这些结果与安大略省进行的一项类似研究的结果进行了比较。
