PMID: 11899482Mar 20, 2002Paper

Effect of low and high doses of Salmonella enteritidis PT4 on experimentally infected chicks

Folia Microbiologica
A A AshegE Pilipcinec

Abstract

Chicks (1-d-old, three groups, each containing 50 chicks) were inoculated with 2 x 10(2) and 2 x 10(8) CFU of Salmonella enteritidis; the third group were kept as uninoculated control. Five birds from each group were euthanized at intervals from 6 h to 4 weeks post-inoculation (pi). In the low-dose group S. enteritidis was isolated from 60% cecal samples at 18 h pi, and from 20% of livers at 3 d pi. Individual variation in the frequency of S. enteritidis recovery was observed in this group. The clearance of salmonella from the organs was faster in the low-dose group, and salmonella was not isolated from the liver and cecum at 21 and at 27 d pi, respectively. However, in the high-dose group, S. enteritidis was isolated from all ceca and 80% of liver 6 h pi, and salmonella was detected in the cecum and liver throughout the experiment. Serous typhlitis and unabsorbed yolk sac were the most prevalent lesions in both groups. Granulomatous nodules in the cecum were found occasionally in some cases in both inoculated groups, which can play a role as reservoirs in carrier chicks.

References

Feb 1, 1990·Epidemiology and Infection·H ChartT J Humphrey
Feb 27, 1988·The Veterinary Record·J D O'Brien
May 1, 1996·British Poultry Science·J ProtaisG Bennejean
Sep 13, 2000·Folia Microbiologica·I Trebichavský

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Citations

Jun 13, 2003·Folia Microbiologica·A A AshegE Pilipcinec
Feb 24, 2004·Folia Microbiologica·V Majtán, L Majtánová
Jul 11, 2007·Avian Pathology : Journal of the W.V.P.A·Claire Valiente MoroGilles Salvat
Jun 28, 2011·Applied and Environmental Microbiology·Robert J AtterburyR Elizabeth Sockett

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