An overview of aspergillosis in poultry: A review

Abstract

Aspergillosis is an infectious, fungal disease caused by Aspergillus species, particularly Aspergillus fumigatus. Infection occurs by inhalation of spores and penetration through egg shell. The disease occurs in two forms, acute and chronic. The acute form occurs by ingestion of large amount of spores, whereas, the chronic form affects birds with reduced immunity. Clinical signs include anorexia, emaciation, dyspnoea, gasping. Gross lesions includes white to yellowish granulomas of pea size. Microscopically peri-alveolar and pulmonary blood vessel congestion is seen. Diagnosis is based on history, clinical signs, necropsy findings, haemato-biochemical changes and culture of fungus. Treatment of aspergillosis is ineffective and prevention is the only way to control the disease. Best managemental practices like sanitation, avoiding wet litter or soil and dusty or moldy feeds, adequate ventilation, and disinfection of feed and waterlines should be carried out to prevent and control the disease.