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Favus in a backyard flock of game chickens
R Droual1, A A Bickford, R L Walker
1California Veterinary Diagnostic Laboratory System, University of California, Davis 93725.
Abstract:
Favus, or avian ringworm, was diagnosed in a backyard flock of game chickens from which Microsporum gallinae was isolated. Infected birds had white crusts on the comb and on the skin of the head and neck. Histopathological lesions included hyperkeratosis of the skin epithelium with invasion of the stratum corneum by fungal mycelia, acanthosis, acantholysis, and hydropic degeneration of cells in the stratum spinosum. The underlying dermis was infiltrated by mononuclear cells and contained lymphoid foci. Daily topical treatment with miconazole was applied in the field and in the laboratory, with apparent success.
Insights
Favus, a fungal infection in chickens, was diagnosed in a backyard flock. Topical miconazole treatment showed apparent success in clearing the avian ringworm caused by Microsporum gallinae.
Area of Science:
- Veterinary Mycology
- Avian Pathology
Background:
- Favus, also known as avian ringworm, is a superficial dermatophyte infection affecting poultry.
- This study investigates a case of favus in a backyard flock of game chickens.
Observation:
- Clinical signs included white crusts on the comb and skin of the head and neck.
- Histopathology revealed hyperkeratosis, fungal mycelial invasion, acanthosis, acantholysis, and hydropic degeneration.
- Dermal inflammatory infiltrates, including mononuclear cells and lymphoid foci, were observed.
Findings:
- Microsporum gallinae was isolated as the causative agent of favus.
- Daily topical application of miconazole demonstrated apparent success in treating the infected birds.
- Treatment was effective both in field conditions and laboratory settings.
Implications:
- Miconazole shows potential as an effective topical treatment for avian ringworm.
- Understanding the histopathological features aids in diagnosing and managing favus in poultry.
- This case highlights the importance of recognizing and treating dermatophyte infections in backyard flocks.