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The incidence of antibiotic resistant bacteria in chicken adn pork

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dc.contributor.advisor Esterhuysen HA, Dr en
dc.contributor.advisor Van der Walt AM, Mrs en
dc.contributor.author Van Wijk E en
dc.date.accessioned 2016-09-22T07:18:35Z
dc.date.available 2016-09-22T07:18:35Z
dc.date.created 2000 en
dc.date.submitted 2003 en
dc.identifier.uri http://hdl.handle.net/20.500.11892/13032
dc.description.abstract The emergence of antibiotic resistance in important human pathogens has globally become a public health concern. Consumption of contaminated meat and meat products constitute a major route for the transmission of antibiotic resistant organisms and the dissemination of resistance genes in the human environment. The aim of this study was to determine the level of antibiotic resistance in potentially pathogenic bacteria associated with pork, chicken meat, chicken manure, chicken feed and eggs. Standard procedures were employed for the selective enrichment and isolation of Escherichia coli, Staphylococcus, Enterobacteriaceae, Pseudomonas and Salmonella, and to determine the level of their susceptibility for penicillin, oxytetracycline, tetracycline, streptomycin, as well as aminoglycoside antibiotics. It was found that 10,1% of the total number of isolates were Pseudomonas, 25,3% Staphylococcus, 21,2% Enterobacteriaceae, 7,0% E. coli and 36,4% Salmonella. Statistical analysis of results showed clusters of isolates exhibiting similar patterns of antibiotic resistance. Except for resistance to penicillin, Pseudomonas isolates were largely susceptible to the antibiotics tested. Staphylococcus isolates were relatively susceptible, with the highest levels of resistance, in this case to oxytetracycline and tetracycline, observed in those from pork and chicken manure. High levels of resistance to oxytetracycline (71%), tetracycline (79%), streptomycin (52%), and penicillin (100%) were detected in Enterobacteriaceae isolates from chicken meat samples. It was found in addition that E. coli from chicken meat samples 100% resistant to oxytetracycline, tetracycline, and penicillin, while Salmonella showed resistance to gentamycin (63%), tetracycline (46%), oxytetracycline and penicillin (99%). Indexing of multiple antibiotic resistance (MAR) confirmed the relatively high levels of resistance in E. coli and Salmonella from the chicken meat samples. Overall, results from the present study indicated that relatively high levels of resistance towards tetracycline, oxytetracycline and penicillin was observed in potentially pathogenic bacteria associated with pork, chicken meat, and the environment of the chicken industry. It was, however found that isolates from the respective bacterial groups were largely susceptible to the aminoglycoside antibiotics, as well as streptomycin and erythromycin. en
dc.language English en
dc.subject Microbiology en
dc.title The incidence of antibiotic resistant bacteria in chicken adn pork en
dc.type Masters degree en
dc.description.degree MSc en

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