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Aspergillosis is one of the most common problems in commercial and backyard poultry farming usually seen in birds of 7-40 days of age, mainly due to poor management practices. It is a non contagious fungal disease of avian species comprising of chickens, turkeys, and less frequently ducklings, pigeons, canaries, geese, and many other wild and pet birds. Etiology in poultry is a fungal species involving Aspergillus fumigates, A. flavus, A. niger, A. glaucus and A. terreus., A. fumigatus. Inhalation of a number of small, hydrophobic fungal spores (conidia) causes the condition. After infective spores invade tracheal, nasal, bronchial and air sac epithelium, they penetrate the respiratory tissue and reproduce, thus causing granulomas. Treatment is generally not effective and prevention is the best way of controlling this disease. Good management practices like sanitation; adequate ventilation and disinfection need to be adopted for control.

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