Investigation of the Occurrence of Lungworm Pneumonia in Sheep Based on Histopathological Study in Tehran Province

Abstract

Lung parasites are one of the main causes of respiratory diseases in sheep in most parts of the world. The survival and development of lung parasites in sheep occurs more in tropical and subtropical regions of the world and this leads to the removal of this organ, which includes many economic losses. In this study, the lungs of 4500 sheep from various farms in an industrial slaughterhouse in Tehran province were examined. After slaughter, common methods of meat inspection were used to identify pathological lesions in carcasses using macroscopic examinations. As a result, macroscopic pneumonia was identified in the lungs of 420 sheep (9.33%). Then, based on specific features such as the presence of gray-white nodules, brown spots, and the presence of adult worms, 65 lungs suspected of lungworm pneumonia were identified and tissue samples were taken.