Epidemiology and Infection

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Epidemiology and Infection (2010), 138:549-558 Cambridge University Press
Copyright © Cambridge University Press 2009
doi:10.1017/S0950268809991051

Original Papers

Gastro-intestinal pathogens

Temporal and farm-management-associated variation in the faecal-pat prevalence of Campylobacter jejuni in ruminants


D. H. GROVE-WHITEa1 c1, A. J. H. LEATHERBARROWa1, P. J. CRIPPSa1, P. J. DIGGLEa2 and N. P. FRENCHa3

a1 Department of Veterinary Clinical Science, Leahurst, University of Liverpool, Liverpool, UK
a2 Department of Mathematics and Statistics, University of Lancaster, Lancaster, UK
a3 Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand
Article author query
grove-white dh [PubMed]  [Google Scholar]
leatherbarrow ajh [PubMed]  [Google Scholar]
cripps pj [PubMed]  [Google Scholar]
diggle pj [PubMed]  [Google Scholar]
french np [PubMed]  [Google Scholar]

SUMMARY

In a 2-year longitudinal study of adult animals on 15 dairy farms and four sheep farms in Lancashire, UK. C. jejuni was isolated from all farms, although not on every occasion. Faecal samples were collected and cultured using standard techniques for isolation of Campylobacter. Assignment to species was via PCR assays. Peak prevalence of C. jejuni in both cattle and sheep was observed during the summer and in cattle this apparent seasonality was associated with grazing pasture [odds ratio (OR) 2·14], while in sheep it was independent of grazing. Increased prevalence was associated with increased milk yield (OR 1·05) and herd size (OR 1·01) in dairy cattle, and with increased stocking density (OR 1·29) and pasture quality (OR 2·16) in sheep. There was considerable variation in prevalence between farms but no evidence of large-scale spatial variation. The association between C. jejuni prevalence and diet in dairy cattle deserves further investigation.

(Accepted September 30 2009)

(Online publication October 22 2009)

Key Words:Campylobacter; cow; epidemiology; sheep

Correspondence:

c1 Author for correspondence: Dr D. H. Grove-White, Livestock Health and Welfare Division, Leahurst, Chester High Road, Neston, Wirral CH64 7TE, UK. (Email: daigw@liv.ac.uk)


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