Antimicrobial resistance in Escherichia coli populations collected from farm animals
DOI:
https://doi.org/10.35172/rvz.2017.v24.241Keywords:
Escherichia coli, antimicrobial resistance, cattle, sheep, broilersAbstract
Antimicrobial resistance is currently one of authorities’ major concerns in healthcare, mainly
due to the danger that may arise from multiresistant strains in situations of contamination and
infection of patients in hospital settings. The origin of this resistance is linked to the dynamics
of natural bacteria populations in soil and water, but also to the excessive and inappropriate use
of antimicrobials in clinical treatment and as growth promoters in herds. In this study,
antimicrobial resistance profiles were analyzed in potentially pathogenic populations of
Escherichia coli in the gastrointestinal tract of poultry, cattle and sheep. This bacterial specie,
although harboring pathogenic pathotypes, is part of the normal microflora of these animals’
intestinal tracts. The lowest antimicrobial resistance rates were observed in sheep isolates.
Resistance highest rates of were observed among bacterial populations derived from the
poultry. In bacterial population from cattle feces, resistance to ampicillin, cephalothin and
erythromycin was observed. Resistance to cephalothin was noted to be widespread among
analyzed populations. Furthermore, the conscious use of growth promoters, and supported on a
proper diagnosis in clinical cases it is essential to inhibit the emergence of multidrug-resistant
strains.
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