Survey of the incidence and aetiology of mastitis on dairy farms in England and Wales
Bradley, Andrew J., Leach, K. A., Breen, J. E., Green, Laura E. and Green, M. J.. (2007) Survey of the incidence and aetiology of mastitis on dairy farms in England and Wales. Veterinary Record, Vol.160 (No.8). pp. 253-258. ISSN 0042-4900Full text not available from this repository.
Official URL: http://dx.doi.org/10.1136/vr.160.8.253
A survey of clinical and subclinical mastitis was carried out on 97 dairy farms in England and Wales, selected at random from members of a national milk recording scheme. The farmers were asked to collect aseptic milk samples from five consecutive cases of clinical mastitis and from five quarters with high somatic cell counts using a defined protocol, and they completed a questionnaire that included information on the cows sampled, the herd and the history of mastitis in the herd. The samples were collected throughout the year. The mean incidence of clinical mastitis was 47 cases per 100 cows per year (estimated from historic farm records) and 71 cases per 100 cows per year (estimated from the samples collected). Streptococcus uberis and Escherichia coli were isolated in pure culture from 23(.)5 per cent and 19(.)8 per cent, respectively, of the clinical samples; 26(.)5 per cent of the clinical samples produced no growth. The most common isolates from the samples with high cell counts were coagulase-negative staphylococci (15 per cent), S uberis (14 per cent) and Corynebacterium species (10 per cent). Staphylococcus aureus and coagulase-positive staphylococci together accounted for 10 per cent of the samples with high somatic cell counts; 39 per cent produced no bacterial growth.
|Item Type:||Journal Article|
|Subjects:||S Agriculture > SF Animal culture|
|Divisions:||Faculty of Science > Life Sciences (2010- ) > Biological Sciences ( -2010)|
|Journal or Publication Title:||Veterinary Record|
|Publisher:||B M J Group|
|Date:||24 February 2007|
|Number of Pages:||10|
|Page Range:||pp. 253-258|
|Access rights to Published version:||Restricted or Subscription Access|
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