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Pathology of experimentally induced quail bronchitis
1Department of Veterinary Pathobiology, School of Veterinary Medicine, Purdue University, West Lafayette, Indiana 47907.
Avian Diseases
|January 1, 1990
Summary
This study details the histopathology of quail bronchitis virus in bobwhite quails, revealing severe lesions in younger birds. Adenovirus-like inclusions were observed, marking a significant finding in avian respiratory disease research.
Area of Science:
- Avian Pathology
- Virology
- Histopathology
Background:
- Quail bronchitis virus (QBV) causes significant respiratory illness in bobwhite quails.
- Understanding the histopathological effects of QBV is crucial for disease management in poultry.
Purpose of the Study:
- To experimentally induce quail bronchitis in bobwhite quails.
- To characterize the histopathological lesions associated with QBV infection at different ages and inoculation routes.
Main Methods:
- Bobwhite quails were inoculated with QBV at various ages (1, 3, 6, 9 weeks) via different routes (intratracheal, intraperitoneal, subcutaneous).
- Histopathological examination of tissues including trachea, lungs, liver, spleen, and bursa of Fabricius was performed.
Main Results:
- Infection resulted in necrotizing tracheitis, bronchitis, pneumonia, hepatitis, splenitis, and bursal necrosis/atrophy.
- Lesions were more severe in younger quails (1 and 3 weeks old).
- Characteristic intranuclear inclusions, indicative of adenovirus infection, were found in multiple organs.
Conclusions:
- Experimental QBV infection causes extensive histopathological damage in bobwhite quails, particularly in young birds.
- The findings highlight the impact of QBV on multiple organ systems and confirm its adenovirus nature.
- This study provides the first report on the histopathology of experimentally induced quail bronchitis.