Prevalence of Antibiotic-Resistant Fecal Escherichia coli Isolates from Penned Broiler and Scavenging Local Chickens in Arusha, Tanzania

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dc.creatorRugumisa, Bernadether
dc.creatorCall, Douglas
dc.creatorMwanyika, Gaspary
dc.creatorMrutu, Rehema
dc.creatorLuanda, Catherine
dc.creatorLyimo, Beatus
dc.creatorSubbiah, Murugan
dc.creatorBuza, Joram
dc.date2019-10-07T11:48:31Z
dc.date2019-10-07T11:48:31Z
dc.date2016
dc.date.accessioned2022-10-25T09:20:48Z
dc.date.available2022-10-25T09:20:48Z
dc.descriptionResearch Article published by Journal of Food Protection, Vol. 79, No. 8, 2016
dc.descriptionWe compared the prevalence of antibiotic-resistant Escherichia coli isolates from household-level producers of broiler (commercial source breeds) and local chickens in the Arusha District of Tanzania. Households were composed of a single dwelling or residence with independent, penned broiler flocks. Free-range, scavenging chickens were mixed breed and loosely associated with individual households. A total of 1,800 E. coli isolates (1,200 from broiler and 600 from scavenging local chickens) from 75 chickens were tested for their susceptibility against 11 antibiotics by using breakpoint assays. Isolates from broiler chickens harbored a higher prevalence of antibiotic-resistant E. coli relative to scavenging local chickens, including sulfamethoxazole (80.3 versus 34%), followed by trimethoprim (69.3 versus 27.7%), tetracycline (56.8 versus 20%), streptomycin (52.7 versus 24.7%), amoxicillin (49.6 versus 17%), ampicillin (49.1 versus 16.8%), ciprofloxacin (21.9 versus 1.7%), and chloramphenicol (1.5 versus 1.2%). Except for resistance to chloramphenicol, scavenging local chickens harbored fewer resistant E. coli isolates (P , 0.05). Broiler chickens harbored more isolates that were resistant to 7 antibiotics (P , 0.05). The higher prevalence of antibiotic-resistant E. coli from broiler chickens correlated with the reported therapeutic and prophylactic use of antibiotics in this poultry population. We suggest that improved biosecurity measures and increased vaccination efforts would reduce reliance on antibiotics by these households.
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dc.identifierdoi:10.4315/0362-028X.JFP-15-584
dc.identifierhttp://dspace.nm-aist.ac.tz/handle/123456789/458
dc.identifier.urihttp://hdl.handle.net/123456789/95255
dc.languageen
dc.publisherJournal of Food Protection
dc.subjectAntibiotic resistance
dc.subjectEscherichia coli
dc.titlePrevalence of Antibiotic-Resistant Fecal Escherichia coli Isolates from Penned Broiler and Scavenging Local Chickens in Arusha, Tanzania
dc.typeArticle

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