Occurrence: Worldwide. Species affected: All. Age affected: Mainly seen in young birds.

Causes: Fungal infection caused by Aspergillus fumigatus, A. flavus and A. niger.

Effects: High mortality, respiratory distress, central nervous dysfunction, sleepiness, inappetance and emaciation. Conjunctivitis and cloudy eyes can be seen.

Aspergillosis is mainly seen in young birds as an acute disease. Chronic ...