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An outbreak of nephropathogenic H13 infectious bronchitis in commercial broilers
G D Butcher1, R W Winterfield, D P Shapiro
1Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville 32610.
Avian Diseases
|October 1, 1989
Summary
A nephropathogenic infectious bronchitis virus (IBV) strain, H13-IB, caused high mortality in broilers. The virus targeted kidneys, leading to severe renal lesions and respiratory signs.
Area of Science:
- Veterinary Virology
- Avian Pathology
Background:
- Infectious Bronchitis Virus (IBV) is a significant pathogen in poultry.
- The Massachusetts strain is known for its widespread impact on broiler health.
Observation:
- A novel nephropathogenic IBV strain (H13-IB) was isolated from diseased broilers.
- Clinical signs included respiratory distress, diarrhea, depression, and high mortality.
- Gross and microscopic renal lesions were characterized by urate deposition, edema, and tubular damage.
Findings:
- The H13-IB virus demonstrated significant nephropathogenicity.
- Tracheal lesions included epithelial changes and inflammatory infiltration.
- Renal pathology was primarily observed in the medullary region.
Implications:
- This finding highlights the emergence of new virulent IBV strains.
- Understanding H13-IB's pathogenesis is crucial for developing effective control strategies.
- This research contributes to the knowledge of IBV-induced kidney disease in commercial poultry.
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