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dc.contributor.advisorOrellana-Feliciano, Lynette E.
dc.contributor.authorDelgado-Torres, Jessica
dc.description.abstractFew have reported the prevalence and antimicrobial susceptibility of Salmonella in organic and ethnic meats. The objective of this study was to assess the prevalence and antimicrobial susceptibility of Salmonella spp from organic (n=120), kosher (n=107), kosher/organic (n=26), and conventional/all natural (n=120) raw retail chicken samples, as well as to characterize these isolates by serotyping. Salmonella was isolated from all sample types. Isolates were confirmed by Polymerase Chain Reaction (PCR). Antimicrobial susceptibility was assessed for all confirmed isolates by the agar disk diffusion method and a total of 151 confirmed strains were serotyped. Overall, prevalence of Salmonella was higher in organic samples. However, organic and kosher isolates showed higher antimicrobial susceptibility than isolates from the other sample types. The most prevalent serovars were Kentucky, Enteriditis, Heidelberg, and Typhimurium. Findings from this study suggest an influence of poultry production system in the prevalence and antimicrobial susceptibility of Salmonella in raw chicken.
dc.description.abstractExisten pocos reportes de la prevalencia y susceptibilidad a antibióticos de Salmonella en carnes orgánicas y étnicas. El objetivo de este estudio fue evaluar la prevalencia y susceptibilidad a antibióticos de Salmonella spp aislada de pollos crudos orgánicos (n=120), kosher (n=107), convencionales/naturales (n=120) y kosher/orgánicos (n=26), además de identificar las especies de Salmonella presentes en estas muestras. Salmonella pudo ser aislada de todos los tipos de muestras. Todas las cepas aisladas fueron confirmadas por Reacción de Polymerasa en Cadena. A todas las cepas confirmadas se les determinó susceptibilidad a antibióticos utilizando el método de difusión de disco en agar y un total de 151 cepas fueron identificadas a nivel de serotipo. En general, las muestras orgánicas mostraron mayor prevalencia de Salmonella. Sin embargo, las cepas aisladas de muestras orgánicas y de muestras kosher mostraron mayor susceptibilidad a antibióticos que cepas aisladas de los otros tipos de muestras. Los serotipos de Salmonella mas prevalentes fueron Kentucky, Enteriditis, Heldelberg y Typhimurium. Los resultados de este estudio sugieren que los diferentes sistemas de producción de pollos influyen en la prevalencia y susceptibilidad a antibióticos de Salmonella spp en pollos crudos.
dc.description.sponsorshipFood Technology and Safety Laboratory of the Agricultural Research Service of the United States Department of Agricultureen_US
dc.subjectAntimicrobial susceptibility of Salmonella in organic and ethnic meatsen_US
dc.subject.lcshSalmonella infections in poultryen_US
dc.subject.lcshPolymerase chain reaction--Diagnostic useen_US
dc.subject.lcshMicrobial sensitivity testsen_US
dc.titlePrevalence, characterization and antimicrobial susceptibility of Salmonella SPP. from organic, Kosher and conventional chicken in retail establishmentsen_US
dc.rights.licenseAll rights reserveden_US
dc.rights.holder(c) 2008 Jessica Delgado-Torresen_US
dc.contributor.committeeChaparro, Mildred
dc.contributor.committeeMontalvo, Rafael
dc.contributor.representativeHarper, Carol
dc.contributor.collegeCollege of Arts and Sciences - Sciencesen_US
dc.contributor.departmentDepartment of Biologyen_US

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    Items included under this collection are theses, dissertations, and project reports submitted as a requirement for completing a graduate degree at UPR-Mayagüez.

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