title: Prevalence of colibacillosis in chickens in greater Mymensingh district of Bangladesh.
abstract: OBJECTIVE
  This study was conducted for determination of the prevalence of colibacillosis in chicken in poultry farms in Mymensingh and Tangail districts. Isolation, identification, and antibiogram profile ofEscherichia coliwere also performed.
  
  
  METHODS
  A total of 25 chickens manifested clinical signs of colibacillosis were collected from five different poultry farms during natural outbreaks.
  
  
  RESULTS
  In broiler, the prevalence of colibacillosis was 0.84%, and in layer, prevalence was 0.80%. The prevalence of colibacillosis was 1.0% and 0.5% in 25-30 days old and 31-35 days old broiler, respectively. In case of layer birds, the prevalence was 0.6% in 40-45 days old bird and 1% in 46-50 days old bird. Identity of theE. coliisolate of chicken was confirmed by sugar fermentation, biochemical tests, and polymerase chain reaction assay. Antibiogram profile ofE. coliisolate of chicken revealed that it was multidrug resistant (resistant against two antibiotics, such as ampicillin and cefalexin).
  
  
  CONCLUSIONS
  Data of this study suggest that colibacillosis is prevalent in the study areas which underscore the need of implementation of prevention and control measure against this disease.
authors.affiliation: Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.
authors.forename: Md Abdul
authors.initials: MA
authors.lastname: Matin
authors.affiliation: Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.
authors.forename: Md Ariful
authors.initials: MA
authors.lastname: Islam
authors.affiliation: Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.
authors.forename: Mst Minara
authors.initials: MM
authors.lastname: Khatun
keywords: Mymensingh; Tangail; chicken; colibacillosis; multidrug resistant Escherichia coli