泌乳母羊的非临床性乳房内感染及其与临床乳腺炎的关联。

Non-clinical intramammary infection in lactating ewes and its association with clinical mastitis.

作者信息

Bor A, Winkler M, Gootwine E

出版信息

Br Vet J. 1989 Mar-Apr;145(2):178-84. doi: 10.1016/0007-1935(89)90102-4.

DOI:10.1016/0007-1935(89)90102-4

Abstract

A bacteriological survey for the study of non-clinical intramammary infection in the sheep udder was carried out in 88 Assaf ewes. A mean infection prevalence in the first few weeks of lactation was 55%. The most common bacterial isolates were Micrococcus spp. followed by coagulase negative staphylococcus, together accounting for 93% of the total number of isolates. An infection prevalence of 54% was found in ewelambs 2 days after their first lambing, indicating a marked new infection rate around lambing. Generally, the course of lactation was characterized by dynamic changes of new infection and spontaneous resolution. About 5% of half udders examined developed clinical mastitis. The comparison of bacteriological data from mastitic milk samples and from samples taken from the same half udders before the appearance of the clinical disease could not support the theory that in sheep, mastitis is a clinical exacerbation of a non-clinical intramammary infection.

摘要

对88只阿萨夫母羊的乳房进行了一项细菌学调查，以研究绵羊乳房的非临床性乳房内感染。泌乳最初几周的平均感染率为55%。最常见的细菌分离株是微球菌属，其次是凝固酶阴性葡萄球菌，两者合计占分离株总数的93%。在初产母羊产羔后2天，发现感染率为54%，这表明产羔前后有明显的新感染率。一般来说，泌乳过程的特点是新感染和自然痊愈的动态变化。约5%接受检查的半侧乳房发生了临床乳腺炎。对患乳腺炎的乳汁样本与临床疾病出现前从同一半侧乳房采集的样本的细菌学数据进行比较，无法支持在绵羊中乳腺炎是非临床性乳房内感染的临床加重这一理论。