Prevalence of major enteric pathogens in Australian dairy calves with diarrhoea

Izzo, MM, Kirkland, PD, Mohler, VL, Perkins, NR, Gunn, AA and House, JK (2011) Prevalence of major enteric pathogens in Australian dairy calves with diarrhoea. Australian Veterinary Journal, 89 5: 167-173. doi:10.1111/j.1751-0813.2011.00692.x

Author Izzo, MM
Kirkland, PD
Mohler, VL
Perkins, NR
Gunn, AA
House, JK
Title Prevalence of major enteric pathogens in Australian dairy calves with diarrhoea
Journal name Australian Veterinary Journal   Check publisher's open access policy
ISSN 0005-0423
Publication date 2011-05-01
Year available 2011
Sub-type Article (original research)
DOI 10.1111/j.1751-0813.2011.00692.x
Open Access Status Not Open Access
Volume 89
Issue 5
Start page 167
End page 173
Total pages 7
Place of publication Chichester, West Sussex, United Kingdom
Publisher Wiley-Blackwell Publishing
Language eng
Formatted abstract
Objective Determine the prevalence of the major enteric pathogens in dairy and dairy beef calves with diarrhoea in Australia.

Design Cross-sectional study.

Methods Faecal samples from 84 Australian dairy and dairy beef properties (597 samples) were screened for rotavirus and coronavirus using real-time reverse transcription polymerase chain reaction, for Salmonella spp. using selective enrichment faecal culture, and for enterotoxigenic Escherichia coli (K99) and Cryptosporidium parvum using a commercial enzyme-linked immunosorbent assay. A logistic regression with random effects model was used to compare prevalence of pathogens in dairy and dairy beef operations.

Results Enteric pathogens were isolated from 97.6% of outbreaks and 95.0% of samples. Rotavirus was the most common pathogen identified (477/597, 79.9%) followed by C. parvum (349/597, 58.5%), Salmonella spp. (142/597, 23.8%), coronavirus (129/597, 21.6%) and E. coli K99 (104/597, 17.4%). Multiple pathogens were identified on 96.4% of farms and from 71.0% of samples. Samples from dairy beef properties were more likely to have multiple pathogens than dairy properties (P < 0.05), whereas rotavirus and Salmonella spp. were more likely to be identified in samples collected from dairy beef than dairy properties (P < 0.05).

Conclusion Most outbreaks of calf diarrhoea in dairy and dairy beef operations involve multiple pathogens. Rotavirus and C. parvum were the most frequently identified pathogens across production systems. Salmonella spp. and rotavirus were more frequently identified in dairy beef operations.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Veterinary Science Publications
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Citation counts: TR Web of Science Citation Count  Cited 31 times in Thomson Reuters Web of Science Article | Citations
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Created: Thu, 31 Mar 2016, 04:12:48 EST by Nigel Perkins on behalf of School of Veterinary Science