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Aspergillus fumigatus Keratitis with Intraocular Invasion in 15-Day-Old Chicks

B. J. Beckman, C. W. Howe, D. W. Trampel, M. C. DeBey, J. L. Richard and Y. Niyo
Avian Diseases
Vol. 38, No. 3 (Jul. - Sep., 1994), pp. 660-665
DOI: 10.2307/1592095
Stable URL: http://www.jstor.org/stable/1592095
Page Count: 6
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Aspergillus fumigatus Keratitis with Intraocular Invasion in 15-Day-Old Chicks
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Abstract

Eye infections were initially observed in single-comb white leghorn breeder chicks at 5 days of age, and morbidity increased from 0.05% to 1.5% after debeaking at 7 days of age. All chicks necropsied at 15 days of age had cheesy yellow exudate within the conjunctival sac of one eye and small (1 mm diameter) white nodular lesions in lungs and on thoracic air-sac membranes. Histopathologic examination of the eyes revealed septate fungal hyphae and inflammatory cells in the anterior chamber, cornea, and conjunctival sac. Similar fungal hyphae were present within lung granulomas. Aspergillus fumigatus was isolated from the eyes. Eye infections were the only health problem reported for several consecutive flocks on this farm. Elimination of moldy feed from the diet and environment and proper management of sawdust litter have prevented fungal ophthalmitis in subsequent flocks. /// Inicialmente se observaron infecciones oculares en reproductoras leghorn blancas de cresta sencilla a los 5 días de edad. La morbilidad aumentó de 0.05% a 1.5% luego del despique a los 7 días de edad. Todas las aves necropsiadas a los 15 días de edad contenían un exudado caseoso amarillo dentro del saco conjuntival de un ojo y lesiones nodulares blancas y pequeñas (1 mm de diámetro) en los pulmones y en las membranas de las sacos aéreos toráxicos. El examen histológico de los ojos reveló la presencia de hifas micóticas septadas y de células inflamatorias en la cámara anterior, en la córnea y en el saco conjuntival. Se encontraron hifas similares en los granulomas del pulmón y se aisló Aspergillus fumigatus de los ojos. El único problema reportado consecutivamente en varios lotes en esta granja fué la presencia de infecciones oculares. La eliminación del alimento contaminado con hongos y el adecuado manejo de la cama de viruta de madera previno la oftalmitis micótica en los lotes siguientes.

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