Dissertation/Thesis Abstract

Isolation, identification, and antimicrobial susceptibility analysis of Enterococccus spp. and Salmonella spp. from conventional poultry farms transitioning to organic farming practices
by Kinney, Erinna Lea, M.P.H., University of Maryland, College Park, 2009, 168; 1465544
Abstract (Summary)

This baseline study evaluated prevalence and antibiotic resistance of food-borne bacteria as conventional poultry facilities transition to organic practices. Poultry litter, feed, soil, water samples and poultry questionnaire responses were collected from 10 conventional and 10 organic-transitioning poultry houses from March to June 2008. Enterococcus spp. (n=260) and Salmonella spp. (n=100) isolates were identified to species level and antimicrobial susceptibility testing was performed using the Sensititre® system. Statistical analyses were performed using STATA 10. Prevalence of Enterococcus spp. on organic-transitioning and conventional poultry farms was 100%; and prevalence of Salmonella spp. was 100% and 40%, respectively. Enterococcus isolates from conventional poultry houses displayed significantly higher percentages of resistance for 9 antibiotic agents compared to organic-transitioning isolates. Conversely, Salmonella spp. isolated from both conventional and organic-transitioning poultry houses exhibited similar antibiotic resistance patterns. Baseline findings suggest importance of poultry production practice in prevalence and antibiotic resistance patterns of food-borne bacteria.

Indexing (document details)
Advisor: Sapkota, Amy R.
Commitee: Dabney, Betty, Joseph, Sam W., Sapkota, Amir
School: University of Maryland, College Park
Department: Public and Community Health
School Location: United States -- Maryland
Source: MAI 47/06M, Masters Abstracts International
Subjects: Animal sciences, Public health
Keywords: Antibiotic resistance, Enterococcus, Environmental health, Organic-transitioning, Poultry production, Salmonella
Publication Number: 1465544
ISBN: 9781109220209
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