Fluoroquinolone-resistant Escherichia coli strains in animal and poultry feed from Ukrainian feed-producing enterprises
Abstract
The article presents the results of studying the sensitivity of Escherichia coli strains isolated from animal and poultry feed samples to fluoroquinolones of the second (ofloxacin, norfloxacin), third (levofloxacin) and fourth (moxifloxacin) generations. It was shown that high resistance to norfloxacin was detected in 7 strains of isolated E. coli, which accounted for 33.3% of the identified ones. To ofloxacin and to the representative of the third generation of fluoroquinolones — levofloxacin, 3 isolated strains of E. coli were resistant, which was 14.3% of the studied strains. Resistance to the representative of the fourth generation of fluoroquinolones — moxifloxacin — was detected in 1 strain of E. coli, which was 4.8% of the tested strains. The results of the studies on fluoroquinolone resistance of the isolated E. coli strains indicate a significant contamination of animal and poultry feed with fluoroquinolone-resistant escherichia. This poses potential risks for the spread and possible transmission of such resistance to other bacterial species and the normobiota of the gastrointestinal tract of animals, poultry when ingested with feed and humans when consuming products of animal origin after feeding such feed.
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