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Indian Journal of Animal Research
Year : 2016, Volume : 50, Issue : 5
First page : ( 773) Last page : ( 775)
Print ISSN : 0367-6722. Online ISSN : 0976-0555.
Article DOI : 10.18805/ijar.5713

Characterization and antibiogram of enteropathogenic Escherichia coli isolated from diarrhoeic and non-diarrhoeic dogs in South Bengal

Banik A., Isore D. P., Joardar S.N., Batabyal K.*, Dey S.

Department of Veterinary Microbiology, F/VAS, West Bengal University of Animal and Fishery Sciences, 37, K.B. Sarani, Kolkata-700 037, India

*Corresponding author's e-mail: drkb.micro@gmail.com

Abstract

Diarrhoea in canines is mainly caused byEscherichia coli which can be fatal also. To understand the depth of this infection, a study was undertaken to detect E. coli isolates from diarrhoeic and non-diarrhoeic dogs in Southern part of West Bengal. A total of 112 canine samples were tested during May to September 2012 revealing approx 63.4% (71) samples positive for Escherichia coli. The most common serotypes were O8 (23.9%) followed by O157 (19.7%), O101 (16.9%), O26 (15.5%), O153 (12.7%) and O6 (11.3%). Among these O6, O8, O26 and O157 were highly pathogenic to mice causing almost 100% mortality within 24hrs of inoculation and were also detected to be haemolytic on sheep blood agar plates except serotype O8. These isolates were mostly sensitive to nalidixic acid (80.29%), cotrimoxazole (78.88%), ciprofloxacin (74.65%), colistin and ceftriaxone (both 71.83%) but were resistant to amikacin (97.18%), kanamycin (95.78%), cephalexin (92.96%) and enrofloxacin (84.51%).

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Keywords

Antibiogram, Diarrhoea, Dogs, Escherichia coli, Pathogenicity.

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