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The prevalence of Salmonella enteritidis and other Salmonella spp. among Canadian registered commercial layer flocks

Published online by Cambridge University Press:  15 May 2009

C. Poppe ,
R. J. Irwin ,
C. M. Forsberg ,
R. C. Clarke  and
J. Oggel
C. Poppe
Affiliation:
Health of Animals Laboratory, Agriculture Canada, 110 Stone Road West, Guelph, Ontario, CanadaN1G 3W4
R. J. Irwin
Affiliation:
Health of Animals Laboratory, Agriculture Canada, 110 Stone Road West, Guelph, Ontario, CanadaN1G 3W4
C. M. Forsberg
Affiliation:
Health of Animals Laboratory, Agriculture Canada, 110 Stone Road West, Guelph, Ontario, CanadaN1G 3W4
R. C. Clarke
Affiliation:
Health of Animals Laboratory, Agriculture Canada, 110 Stone Road West, Guelph, Ontario, CanadaN1G 3W4
J. Oggel
Affiliation:
Laboratory Services Division, Central Experimental Farm, Ottawa, Ontario, CanadaK1A 0C6
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Summary

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A survey was conducted to estimate the prevalence of Salmonella enteritidis and other salmonellas among Canadian commercial egg producing flocks. Environmental (faecal and eggbelt) samples from 152 of 295 (52·9%) randomly selected flocks were contaminated with salmonellas. Thirty-five different salmonella serovars were isolated. Eggbelt samples were more often contaminated with salmonellas than faecal samples (25·7 v. 10·1 %). The most prevalent serovars were S. heidelberg, S. infantis, S. hadar, and S. schwarzengrund; they were isolated from samples of 59/295 (20%), 18/295 (6·1%), 17/295 (5·8%), and 15/295 (5·1%) flocks, respectively. Feed samples of 21/295 (7·2%) flocks were contaminated with salmonellas. Salmonella enteritidis was isolated from the environmental samples of 8/295 (2·7%) flocks. Salmonella enteritidis phage type (PT) 8 was isolated from 5 flocks, PT 13a from 2 flocks, and PT 13 from 1 flock.

Type
Special Article
Information
Epidemiology & Infection , Volume 106 , Issue 2 , April 1991 , pp. 259 - 270
Copyright
Copyright © Cambridge University Press 1991

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