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Herpes viral hepatitis in a toucan
B R Charlton1, B C Barr, A E Castro
1California Veterinary Diagnostic Laboratory System, School of Veterinary Medicine, University of California-Davis, Turlock 95381.
Avian Diseases
|July 1, 1990
Summary
A toucan died from herpesvirus hepatitis, confirmed by liver and spleen pathology and viral isolation. This avian herpesvirus differed from Pacheco
Area of Science:
- Veterinary Pathology
- Avian Virology
- Infectious Diseases
Background:
- Herpesvirus infections can cause severe disease in birds.
- Differential diagnosis is crucial for accurate avian disease management.
- Contact with infected conspecifics or other avian species is a common transmission route.
Observation:
- A toucan presented with necrotizing hepatitis and intranuclear inclusions.
- Herpesvirus was isolated from the toucan's liver and identified via electron microscopy.
- The identified herpesvirus did not react with antibodies against Pacheco's disease herpesvirus.
Findings:
- The toucan succumbed to a necrotizing hepatitis attributed to a herpesvirus infection.
- The virus was distinct from the herpesvirus causing Pacheco's disease.
- A presumptive diagnosis of chlamydiosis was made but could not be confirmed by isolation.
Implications:
- This case highlights the potential for novel or distinct herpesviruses to cause fatal hepatitis in toucans.
- Accurate diagnosis requires a combination of histopathology, viral isolation, and molecular techniques.
- Understanding avian herpesvirus diversity is critical for disease prevention and control in zoological collections and wild bird populations.