Black proventriculus in Cobb 500 broiler breeders

Document Type: Clinical Report

Authors

1 Department of Poultry Health and Diseases, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran

2 Department of Microbiology, Faculty of Veterinary Medicine, Urmia University, West-Azerbaijan, Urmia, Iran.

3 Division of Pathology, Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, West-Azerbaijan, Urmia, Iran.

4 PhD candidate, Division of Pathology, Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, West-Azerbaijan, Urmia, Iran.

10.30466/vrf.2020.119777.2830

Abstract

Black proventriculus is a necropsy finding sign was seen during postmortem examinations of dead young chicks up to 10 days of age and due to variation in color of affected proventriculus organ, it may be ignored in some cases, in particular when the disease occurs simultaneously with other well-recognized infections of 2 weeks old chicks. In late January 2018, a number of live and dead chicks with a history of an unusual increase in mortality showing no clinical signs but sudden dead were referred to poultry clinic of Faculty of Veterinary Medicine, Urmia University, Urmia, Iran. General routine postmortem examination revealed color changes (light green to dark green color) in the wall of proventriculus tougher with some degrees of congestion in the lungs and liver of the dead chicks. Microbiology tests revealed that the causative agent is Escherichia coli (E. coli) strain O142 and histopathological examination indicated that the color changing of the organ was due to necrosis of glandular epithelium with locally extensive or diffuse hypercellularity by lymphocytes and macrophages with hemorrhages. In conclusion, black proventriculus due to E. coli strain O142 is responsible for sudden death of young chicks and based on antibiogram, selective antibiotics should be used for treatment of the affected flocks.

Keywords



Articles in Press, Accepted Manuscript
Available Online from 29 September 2020
  • Receive Date: 07 January 2020
  • Revise Date: 01 March 2020
  • Accept Date: 12 April 2020