Prevalence and antimicrobial resistance profiles of Salmonella species and Escherichia coli isolates from poultry feeds in Ruiru Sub-County, Kenya

BMC Research Notes

Anthony Kebira Nyamache¹  Dorica Gakii Ngai¹  Omwoyo Ombori² 

[1] Department of Microbiology, Kenyatta University, P.O Box 43844-00100, Nairobi, Kenya;Department of Pant and Microbial Sciences, Kenyatta University, P.O Box 43844-00100, Nairobi, Kenya;

关键词: Poultry feed contamination;    Salmonella;    E. coli;    Antimicrobial resistance;    Resistance genes;   

DOI  :  10.1186/s13104-021-05456-4

来源: Springer

【 摘 要 】

ObjectivesContaminated poultry feeds can be a major source of E. coli and Salmonella infections in poultry. This study aimed at determining microbial load, prevalence and antimicrobial resistance profiles of Salmonella sp. and E. coli and associated resistance genes among isolates from poultry feeds.ResultsA total of 150 samples of different poultry feed types were randomly collected from selected sites within Ruiru Sub-County. The microbial load was determined, Salmonella sp. and Escherichia coli were isolated and antimicrobial susceptibility test carried out. Antimicrobial resistance genes were also screened among the resistant isolates. Out of analyzed samples, 58% and 28% contained Escherichia coli and Salmonella sp. respectively. Bacterial load ranged between 3.1 × 105 and 3.0 × 106 cfu/g. Highest resistance was against ampicillin (41%) for Salmonella sp. and (62%) for E. coli isolates. Ampicillin resistant isolates carried TEM and SHV genes. In addition, strB and Dfr resistance genes associated with streptomycin and cotri-moxazole were detected. All the isolates were susceptible to chloramphenicol and ciprofloxacin. The study reveals high bacterial contamination, presence of beta-lactamase, aminoglycoside and sulphonamide resistance genes across isolates from poultry feeds. Therefore, contaminated poultry feeds with bacteria are likely to lead to increase in antimicrobial resistant strains across the community.

【 授权许可】

CC BY