Prevalence of and examination of exposure factors for Salmonella on commercial egg-laying farms in Barbados

During January–March 2009, an outbreak of Salmonella was diagnosed in four commercial egg-laying farms in Barbados. During the outbreak, 511 layers died while 3257 layers were voluntarily culled from one affected farm. Salmonella ser Enteritidis was identified in avian tissues (ovaries, liver, and u...

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Bibliographic Details
Published in:Preventive veterinary medicine 2013-07, Vol.110 (3-4), p.489-496
Main Authors: Aimey, Vicki, Hunte, Kerrilyn, Whitehall, Pamela, Sanford, Bryan, Trotman, Mark, Delgado, Amy, Lefrancois, Thierry, Shaw, John, Hernandez, Jorge
Format: Article
Language:English
Subjects:
Animal Husbandry
Animals
Barbados
Barbados - epidemiology
Chickens
Colony Count, Microbial
Cross-Sectional Studies
Dust - analysis
Environmental Exposure
Feces - microbiology
Female
Floors and Floorcoverings
Housing, Animal
Ovum - microbiology
Poultry
Poultry Diseases - epidemiology
Poultry Diseases - microbiology
Prevalence
Risk Factors
Salmonella
Salmonella enteritidis - isolation & purification
Salmonella Infections, Animal - epidemiology
Salmonella Infections, Animal - microbiology
Serotyping - veterinary
Surveys and Questionnaires
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Summary:During January–March 2009, an outbreak of Salmonella was diagnosed in four commercial egg-laying farms in Barbados. During the outbreak, 511 layers died while 3257 layers were voluntarily culled from one affected farm. Salmonella ser Enteritidis was identified in avian tissues (ovaries, liver, and uterus), and egg samples submitted to the Ministry of Agriculture, Food, Fisheries, and Water Resource Management (MAFFW) Veterinary Services (VS) Laboratory by managers of the affected farms. As a result of this outbreak, MAFFW VS conducted a survey to investigate the prevalence of Salmonella on commercial egg-laying farms in Barbados. In addition, the relationships between farm-level exposure factors and diagnosis of Salmonella were examined. This paper describes the results of this survey. Nineteen of 26 farms (73%; 95% CI=56–90%) were classified as positive for Salmonella. The odds of testing positive for Salmonella were 10 times higher in large farms, compared to small farms (OR=10.80; 95% CI=1.01, 115.10; p=0.04). More small farms (8/11) cleaned and disinfected poultry facilities quarterly or more often than large farms did (1/10) (p
ISSN:0167-5877
1873-1716
DOI:10.1016/j.prevetmed.2012.12.009