Wilesmith J W, Francis P G, Wilson C D
Vet Rec. 1986 Feb 22;118(8):199-204. doi: 10.1136/vr.118.8.199.
A three-year survey to determine the incidence of clinical mastitis and the associated bacteria in dairy herds in England and Wales is described. Escherichia coli was the predominant organism in each year. Streptococcus uberis and Staphylococcus aureus were important for part for each year. The annual incidence of mastitis declined from 54.6 cases per 100 cows in 1980 to 41.2 in 1982. The incidence increased with age and declined with increasing herd size. The culling rate due solely to mastitis was 3 per cent. Strep uberis was the pathogen most frequently isolated from clinical cases which occurred in the dry period. Thirty per cent of all cases recurred at least once and staphylococcal cases exhibited the highest frequency of recurrence.
本文描述了一项为期三年的调查，旨在确定英格兰和威尔士奶牛场临床乳腺炎的发病率及相关细菌。大肠杆菌在每年都是主要病原体。乳房链球菌和金黄色葡萄球菌在每年的部分时间里也很重要。乳腺炎的年发病率从1980年的每100头奶牛54.6例降至1982年的41.2例。发病率随年龄增长而增加，随牛群规模增大而下降。仅因乳腺炎导致的淘汰率为3%。乳房链球菌是干奶期临床病例中最常分离出的病原体。所有病例中有30%至少复发一次，葡萄球菌病例的复发频率最高。
