Incidence of aspergillosis in different avian species Sanduri Aasritha, Bora Swathi*, Muthyala Architha, Chandravathi T., Yadala Ravikumar, Lakshman M., Anwesh Y., Gurram Srinivas Department of Veterinary Pathology, College of Veterinary Science, Rajendranagar, Hyderabad, PVNRTVU, Telangana-500 030 *Address for Correspondence Swathi Bora, Department of Veterinary Pathology, College of Veterinary Science, Rajendranagar, Hyderabad, PVNRTVU, Telangana-500 030, India, E-mail: drswathibora@gmail.com
Online Published on 2 January, 2024. Abstract A total of 15 dead birds (8 poultry, 2 ducks and 5 quails) presented for necropsy examination at different timeline were with clinical history of respiratory distress, nasal discharges, anorexia and emaciation. Postmortem examination of birds revealed lungs with multiple, hard, creamy yellow coloured nodules and cheesy caseous plaques in air sacs. Similar lesions were also observed on liver and thoracic cavity in ducks. Histological examination of the lung sections from poultry revealed granulomatous reaction with fungal hyphae similar to letter ‘Y’ radiating from central necrotic area surrounded by infiltration of mononuclear cells demonstrated by H&E and PAS stain. Upon cultural examination, bluegreen to grey mouldy colonies on SDA plates were observed, indicating A. fumigatus in poultry and quail samples. Duck samples exhibited yellow-green to olive colonies indicating A. flavus. The fungal colonies of A. fumigatus on staining by LPCB stain revealed conidial heads with uniseriate row of phialides on the upper two third of the vesicle, whereas conidial heads of A. flavus shown long conidiophore with spherical vesicle at the apex and radiating phialides. Top Keywords A. flavus, A. fumigatus, Aspergillosis, LPCB stain, PAS stain. Top |