Antimicrobial Resistance Pattern of Fecal Escherichia coli Isolated from Non-diarrhoeic Pet Dogs at Chittagong Metropolitan Area

Abstract

Antimicrobial resistance has become an increasingly pressing problem in many countries in human and animal. The study was designed with the aim of isolation and identification of Escherichia coli and estimation of its antimicrobial resistance to ascertain the prevalence of E. coli in dog. A total of 24 Escherichia coli isolates recovered from 40 rectal swab samples of non diarrhoeic pet dogs in SAQTVH, Chittagong. Antimicrobial resistance was determined with 9 antimicrobial agents by means of disc diffusion assay. 100% resistance was observed in Ampicillin which was followed by Amoxicillin (95.83%), Colistin Sulfate (79.16%), Oxytetracycline (75%), Cotrimoxazole (75%), Ciprofloxacin (70.83%) and Ceftriaxone (62.5%). Conversely, 58.33% sensitivity was shown by Gentamicin and 91.66% intermediately sensitive as Doxycyclin. All E. coli isolates were reported as resistant to more than five antibiotics (multidrug-resistant). Therefore, more attention should be paid to the indiscriminate use of antimicrobials, and companion animals should be treated with sensitized drugs on the basis of result of the sensitivity study in the specific areas/regions.