Prevalence of Salmonella on Laying Hen Farms and Control of Colonization in Poultry Through Egg Yolk Antibodies

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dc.contributor.advisorBiswas, Debabrataen_US
dc.contributor.authorAlmario, Jose Alejandro Navarroen_US
dc.contributor.departmentAnimal Sciencesen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2014-06-26T05:41:59Z
dc.date.available2014-06-26T05:41:59Z
dc.date.issued2014en_US
dc.description.abstractIn the United States, rates of foodborne illness caused by Salmonella have not changed significantly. One study in this thesis estimated Salmonella prevalence and antimicrobial resistance of various samples from conventional (n=181) and organic (n=252) farms. Rates of Salmonella contamination were significantly lower on conventional than organic farms. Antimicrobial resistance was significantly higher on isolates from conventional versus organic farms. These findings suggest that poultry production practices may have significant effects on prevalence and antibiotic resistance patterns of Salmonella. The other study assessed the efficacy of a Salmonella control strategy using anti-Salmonella antibodies, two chicken cell lines, an HD-11 macrophage and a DF-1 fibroblast line, and Salmonella serovars Typhimurium and Enteritidis. In DF-1 cells, treatment showed decrease adherence of the pathogen. However, in HD-11 cells, treatment showed an increase in pathogen adherence, indicating a more detailed understanding of chicken response to treatment with the antibodies is needed before full-scale implementation.en_US
dc.identifier.urihttp://hdl.handle.net/1903/15483
dc.language.isoenen_US
dc.subject.pqcontrolledMicrobiologyen_US
dc.subject.pqcontrolledFood scienceen_US
dc.subject.pquncontrolledconventionalen_US
dc.subject.pquncontrolledeggen_US
dc.subject.pquncontrolledorganicen_US
dc.subject.pquncontrolledSalmonellaen_US
dc.titlePrevalence of Salmonella on Laying Hen Farms and Control of Colonization in Poultry Through Egg Yolk Antibodiesen_US
dc.typeThesisen_US

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