AL-Qadisiyah Journal of Veterinary Medicine Sciences

Abstract

3 samples of fertile hydatid cysts and 3 other sterile were collected from sheep liver and 3 samples of sterile hydatid cysts from cows liver. Infected liver samples with hydatid cyct were obtained from meat seal shops in AL-Muthanna province in December 2010 ,then measured dimentions of cysts and calculated quantity of hydatid fluid and viability of protoscolices by staining with eosin stain then examining under light microscope of 40x. petechial hemorrhage and paleness around cysts were important gross lesions in sheep in addition to calcification in cow hydatid cysts, on other hand the histological lesions were thickened fibrous layer and sever necrosis with infiltrations of eosinophils and extensive calcification in cows liver. There was significant effect of amount of hydatid cyst, thickness of fibrous layer and thickness of necrotic layer.