Disseminated Mycosis in Layer Cockerels and Pullets

Eight-wk-old layer cockerels and pullets were presented to the diagnostic lab with a history of increased mortality, ruffled feathers, lameness, and recent vaccination. At necropsy, the birds had large multifocal granulomas in multiple tissues. Only light bacterial growth was seen on culture. On his...

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Bibliographic Details
Published in:Avian diseases 2003-01, Vol.47 (1), p.229-233
Main Authors: Steinlage, Sara J. Throne, Sander, Jean E, Brown, Tom P, Lobsinger, Christine M, Thayer, Stephan G, Martinez, Algis
Format: Article
Language:English
Subjects:
Air Sacs - microbiology
Animals
Aspergillus
Aspergillus - isolation & purification
Birds
Case Reports
chicken
Chickens
Chickens - microbiology
Female
Fungal infections
Fungi
fungus
Granuloma
Hyphae
Infections
Kidney - pathology
layer
Liver - microbiology
Liver - pathology
Lung - microbiology
Lung - pathology
Lungs
Male
Mycoses - diagnosis
Mycoses - pathology
Mycoses - veterinary
Myocardium - pathology
Penicillium - isolation & purification
Peritoneum - pathology
Poultry Diseases - diagnosis
Poultry Diseases - microbiology
Poultry Diseases - pathology
Rhizopus - isolation & purification
Skin - pathology
Spleen - pathology
zygomycete
Zygomycosis
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Summary:Eight-wk-old layer cockerels and pullets were presented to the diagnostic lab with a history of increased mortality, ruffled feathers, lameness, and recent vaccination. At necropsy, the birds had large multifocal granulomas in multiple tissues. Only light bacterial growth was seen on culture. On histopathology, a mixed population of fungi was seen within the granulomas including zygomycetes and Aspergillus, with the zygomycetes being the predominant organism. Because of the coinfection with Aspergillus and Penicillium, obtaining the zygomycetes in pure culture was unsuccessful. The source of the zygomycete fungi remains unknown; however, zygomycetes are known to be ubiquitous. Serology was performed to evaluate the flock's immune status. There was no evidence of immunosuppression caused by chicken anemia virus or bursal disease infections. No flock treatment was initiated.
ISSN:0005-2086
1938-4351
DOI:10.1637/0005-2086(2003)047[0229:DMILCA]2.0.CO;2