Efficacy of several vaccination programmes in commercial layer and broiler breeder hens against experimental challenge with Salmonella enterica serovar Enteritidis

Avian Pathology : Journal of the W.V.P.A
Rafael Antonio Casarin Penha FilhoLuiz Sesti

Abstract

Two experiments were performed to evaluate the protective effect of various vaccination combinations given at 5 and 9 weeks of age against experimental challenge with Salmonella enterica serovar Enteritidis (SE) phage type 4 at 12 weeks of age. In Experiment 1, groups of commercial layers were vaccinated by one of the following programmes: Group 1, two doses of a SE bacterin (Layermune SE); Group 2, one dose of a live Salmonella enterica serovar Gallinarum vaccine (Cevac SG9R) followed by one dose of the SE bacterin; Group 3, one dose of each of two different multivalent inactivated vaccines containing SE cells (Corymune 4K and Corymune 7K; and Group 4, unvaccinated, challenged controls. In Experiment 2, groups of broiler breeders were vaccinated by the same programmes as Groups 1 and 2 above while Group 3 was an unvaccinated, challenged control group. All vaccination programmes and the challenge induced significant (P < 0.05) seroconversion as measured by enzyme-linked immunosorbent assay. Overall, in both experiments, all vaccination schemes were significantly effective in reducing organ (spleen, liver and caeca) colonization by the challenge strain as well as reducing faecal excretion for at least 3 weeks. Vaccinated layers ...Continue Reading

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Citations

Dec 22, 2012·Expert Review of Vaccines·Taseen S DesinAndrew A Potter
Apr 9, 2011·International Journal of Food Microbiology·Michael P Doyle, Marilyn C Erickson
Jun 26, 2015·Foodborne Pathogens and Disease·Haitham Ghunaim, Taseen S Desin
Jun 24, 2015·Veterinary Immunology and Immunopathology·Rafael Antonio Casarin Penha FilhoAngelo Berchieri Junior
Apr 27, 2013·Comparative Immunology, Microbiology and Infectious Diseases·Se-Yeoun ChaHyung-Kwan Jang
Jul 1, 2017·Avian Pathology : Journal of the W.V.P.A·Eduardo Correa MunizVladimir Pinheiro do Nascimento

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Methods Mentioned

BETA
enzyme-linked immunosorbent assays
ELISA

Software Mentioned

Sigmaplot

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