Sol J, Sampimon O C, Snoep J J, Schukken Y H
Animal Health Service, Deventer, The Netherlands.
J Dairy Sci. 1997 Nov;80(11):2803-8. doi: 10.3168/jds.S0022-0302(97)76243-X.
The objective of this study was to determine the factors that were associated with the cure of subclinical mastitis caused by Staphylococcus aureus treated during lactation. One hundred forty-three quarters that were infected with S. aureus were available from a number of treatment trials. Analysis of these data showed that the most important factors associated with cure were age of the cow, somatic cell count at the time of treatment, presence of the infection in the front quarters, and stage of lactation. Other factors, such as number of infected quarters per cow and sensitivity or resistance of the strain to penicillin, were not significant. Because of the relatively low probability of cure, it is important to know risk factors for cure and, hence, to choose cows for treatment with great care. Using these data, a prediction equation was developed to determine the cure rate of subclinical mastitis caused by S. aureus when treated during lactation.
本研究的目的是确定与哺乳期治疗由金黄色葡萄球菌引起的亚临床乳腺炎治愈相关的因素。从多项治疗试验中获得了143个感染金黄色葡萄球菌的乳腺区。对这些数据的分析表明，与治愈相关的最重要因素是奶牛的年龄、治疗时的体细胞计数、前乳腺区是否存在感染以及泌乳阶段。其他因素，如每头奶牛感染的乳腺区数量以及菌株对青霉素的敏感性或耐药性，并不显著。由于治愈的概率相对较低，了解治愈的风险因素并因此谨慎选择治疗的奶牛非常重要。利用这些数据，开发了一个预测方程，以确定哺乳期治疗由金黄色葡萄球菌引起的亚临床乳腺炎的治愈率。
