Airsacculitis is not a disease, but a pathological lesion, associated with various respiratory diseases. Airsacculitis is the inflammation of the air sacs in poultry and is one of the most economically important respiratory conditions in broiler production. It is commonly associated with bacteria such as Avian pathogenic Escherichia coli, Mycoplasma gallisepticum, and Mycoplasma synoviae, often following viral respiratory infections or poor environmental conditions.