Recognition of type Occurrence and pathology of Gongylonema infection in esophagus of sheep in Babol abattoir

Gongylonemu pulchrum Molin, 1857, is a spirurid nematode that parasitizes a variety of mammals worldwide. Thisnematode has an indirect life cycle and definitive hosts are infected by eating infected beetles. The nematode inclined to have the upper digestive tract. There are 31 reports of human infection by Muller. The present study was performed on 141 sheep were slaughtered in Babol abattoir. For the pathological study the esophagus in 3 cm pieces cut with the parasite and then fixed in 10% formalin and transferred to the pathology laboratory. Esophageal sections were observed for parasites. From the total 8.5% positive samples, 90.4% were identified as Gongylonema pulchrum , including 12 male and 7 female nematodes. The remaining samples were 2 male G. verruocosum. Pathologic studies showed Epithelial hypertrophy, acanthosis and parakeratosis. These parasites created significant pathologic changes in the sheep's esophagus.