Original scientific paper

Concurrent outbreak of infectious bursal disease (IBD), aflatoxicosis and secondary microbial infection in broiler chicks.

Arvind Mahajan ; Department of Veterinary Microbiology, College of Veterinary and Animal Sciences, HPKV, Palampur, India
Ramesh Chand Katoch ; Department of Veterinary Microbiology, College of Veterinary and Animal Sciences, HPKV, Palampur, India
Rajesh Chahota ; Department of Veterinary Microbiology, College of Veterinary and Animal Sciences, HPKV, Palampur, India
Subhash Verma ; Department of Veterinary Microbiology, College of Veterinary and Animal Sciences, HPKV, Palampur, India
Simmi Manuja ; Department of Veterinary Epidemiology and Preventive Medicine, College of Veterinary and Animal Sciences, HPKV, Palampur, India

Abstract

A deadly outbreak of aflatoxicosis, as well as infectious bursal disease (IBD), in two adjoining organized poultry farms, further complicated by secondary microbial invasion, was investigated. Morbidity and mortality was 80-90% among broiler chicks in the 4 to 6 week age group. Samples of vital organs comprising liver, spleen, kidney, bursa of Fabricius, lungs, heart blood, bile and intestines were processed microbiologically. Morbid materials yielded Escherichia coli, Streptococcus faecalis and Proteus spp. Aspergillus flavus was isolated from feed samples collected randomly from feed stocks. Representative specimens of liver, spleen, bursa and kidney collected at 10% formal saline were subjected to histopathological investigations. Agar gel precipitation test conducted on the bursal tissue homogenates of 22 birds discerned strong precipitation lines with known positive IBD hyperimmune serum. The aflatoxin level in feed offered to the affected birds varied from 100 ppb to 500 ppb. Conspicuous histomorphological alterations corresponding to aflatoxicosis, infectious bursal disease, as well as other secondary bacterial infections, were evident in these visceral organs.

Keywords

aflatoxicosis; broiler chick; infectious bursal disease

Hrčak ID:

78874

URI

https://hrcak.srce.hr/78874

Publication date:

18.4.2002.

Article data in other languages: croatian

Visits: 1.849 *