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The epidemiology of salmonella in calves: the role of markets and vehicles

Published online by Cambridge University Press:  15 May 2009

C. Wray ,
N. Todd ,
I. M. McLaren  and
Y. E. Beedell
C. Wray
Affiliation:
Central Veterinary Laboratory, New Haw, Weybridge, Surrey KT15 3NB
N. Todd
Affiliation:
MAFF, Veterinary Investigation Centre, Langford, Bristol BS18 7DX
I. M. McLaren
Affiliation:
Central Veterinary Laboratory, New Haw, Weybridge, Surrey KT15 3NB
Y. E. Beedell
Affiliation:
Central Veterinary Laboratory, New Haw, Weybridge, Surrey KT15 3NB
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Summary

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Environmental contamination has been shown to be an important aspect of the epidemiology of salmonellosis in calves. Markets and transport vehicles are important links in the calf marketing chain and these were investigated to determine the level of salmonella contamination.

Salmonellas were isolated from 7 of the 14 markets surveyed, with 31 of 838 samples (3.7%) being positive. Nine different salmonella serotypes, of which the commonest was Salmonella typhimurium, were isolated. Four different phage types of S. typhimurium were detected, the commonest being DT204C.

Salmonellas were isolated from 22 of the 107 vehicles (20.6%) examined before washing and from 4 of the 62 vehicles (6.5%) examined after cleaning. Twelve different salmonella serotypes were isolated, of which the most frequent was S. typhimurium. The commonest of the six different S. typhimurium phage types was DT204C.

These results indicate that improved cleaning and disinfection routines both for vehicles and markets are necessary to control salmonellosis in calves.

Type
Research Article
Information
Epidemiology & Infection , Volume 107 , Issue 3 , December 1991 , pp. 521 - 525
Copyright
Copyright © Cambridge University Press 1991

References

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