Investigating an Outbreak of Aspergillus fumigatus Infection in a Racing Pigeon (Columba livia domestica) Flock

In this study, the clinical course, pathological findings, and potential risk factors of a systemic aspergillosis outbreak caused by Aspergillus fumigatus in racing pigeons (Columba livia domestica) were investigated. The disease was reported during period intense exercise 120 head pigeon flock. coincided with high environmental temperatures. Affected birds displayed symptoms, such as weakness, fatigue, depression, inability to stand, rapidly developing incoordination, convulsions, death. Necropsy revealed varying sized, prominent nodular or plaque-like lesions on lungs, air sacs, visceral peritoneum. Single multiple case- onecrotic fungal granulomas invading existing and/or adjacent tissues seen histopathologically. Malacic le- sions associated elements observed central nervous system. Histopathologic cytological findings presence characteristic A. lesions. Considering fact that envi- ronmental temperatures above seasonal norms emergence well subjugation for race preparations, colonization its spread likely due combined effects these factors.