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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Veröffentlicht in: | Avian diseases 2003-01, Vol.47 (1), p.229-233 |
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Zusammenfassung: | 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.Original Abstract: Reporte de Caso -Micosis diseminada en machos y pollonas de lineas de gallinas ponedoras. Phi embras y machos de 8 semanas de edad de la linea liviana fueron recibidas en el laboratorio de diagnostico con historia de aumento en la mortalidad, plumas erizadas, cojeras y vacunacion reciente. A la necropsia se encontraron granulomas grandes y multifocales en varios tejidos. Un ligero crecimiento bacteriano fue observado en los cultivos. Por histopatologia, dentro de los granulomas se observo una poblacion variada de hongos incluyendo zigomicetos y Aspergillus, siendo los zigomicetos la poblacion predominante. Debido a la coinfeccion entre los hongos de los generos Aspergillus y Penicillium no fue posible aislar los zigomicetos en cultivo puro. La fuente de estos zigomicetos permanece desconocida, sin embargo, se sabe que estos organismos son ubicuos. Los resultados serologicos obtenidos demostraron que no hubo evidencia de inmunosupresion por infecciones con los virus de la anemia infecciosa aviar o con Gumboro. No se inicio un tratamiento del lote. double prime bbreviations: CAV = chicken anemia virus; ELISA = enzyme-linked immunosorbent assay; GMS = Grocott methenamine silver nitrate stain; H & E = hematoxylin and eosin; IBD = infectious bursal disease; IBV = infectious bronchitis virus; MG = Mycoplasma gallisepticum, MS = Mycoplasma synoviae; NDV = Newcastle disease virus; XLT4 = xylose lysine tergitol 4 |
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ISSN: | 0005-2086 |
DOI: | 10.1043/0005-2086(2003)047(0229:DMILCA)2.0.CO;2 |