安大略省部分奶牛场乳腺炎调查
A survey of mastitis in selected ontario dairy herds.
作者信息
Brooks B W, Barnum D A, Meek A H
出版信息
Can Vet J. 1982 May;23(5):156-9.
A mastitis survey involving 74 Ontario dairy herds was conducted. The prevalence of infection at the quarter level was found to be 4.1% with Streptococcus agalactiae, 4.5% with other streptococcal species and 8.0% with Staphylococcus aureus. Regardless of the infection status, the geometric mean somatic cell count was found to increase with age of the cow but no increase was observed with increasing stage of lactation. The percentage of cows from which a bacterial pathogen was isolated increased with age but not with stage of lactation.
开展了一项涉及安大略省74个奶牛场的乳腺炎调查。发现无乳链球菌引起的季度感染率为4.1%，其他链球菌属引起的感染率为4.5%，金黄色葡萄球菌引起的感染率为8.0%。无论感染状况如何，均发现几何平均体细胞数随奶牛年龄增加而升高，但未观察到其随泌乳阶段增加而升高。分离出细菌病原体的奶牛百分比随年龄增加，但不随泌乳阶段增加。
Zotero 插件