Antibioresistance of Escherichia coli Strains Isolated from Chicken Colibacillosis in Western Algeria


Abstract: In western Algeria, 251 Escherichia coli isolates were recovered from broilers with clinical signs and lesions of colibacillosis. Serotyping showed that 82% of the isolates belong to one of the following serotypes: O78, O2, and O1. Antibiograms revealed a high level of resistance to oxytetracycline (82%), amoxicilline and ampicilline (47%), trimethoprim-sulfmethoxazole (42%), oxolinic acid and flumequine (31%). However, only a low percentage of strains were resistant to enrofloxacine (6%) and colistine (3%). Although multiresistance was common, low association was found between the serotype and antibioresistance.

Keywords: Escherichia coli, antibioresistance, colibacillosis, Algeria, poultry

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