مطالعه وضعيت آلودگي سگ سانان به كرم بالغ و دامهاي ذبح شده به مرحله لاري ECHINOCOCCAS GRANALOSAS در استان كردستان

In the present study, 35 stray dogs (Mixed breed), 3 red foxes (Vulpes vulpes) were examined for Echinococcus granulosus infection as well as 19425 sheep, 5938 goats and 11883 cattle for hydatid infection in Kordestan province in West Iran during three years {1997 - 2000). Meanwhile fertility rate of different types and forms of cysts isolated from infected animals and the viability of protoscoleces were also determined. Our results indicated that, 11.43 % of the dogs was infected with Echinococcus granulosus. 5.33% of the sheep, 3.06% of the goats and 9.49% of the cattle were also found to be infected with hydatid cyst. In infected sheep, 75.35% of the cysts were found in lungs, 10.53% in liver and 13.93% in both liver and lungs. In infected goats, 80.76% of the cysts were found in lungs. 6.91% in liver and 12.08% in both liver and lungs. In infected cattle, 79.24% of the cysts were found in lungs, 5.49% in liver and 13.12% in both liver and lungs. The cysts isolated from liver and lungs of the sheep show higher fertility rate of cysts isolated from sheep, goats and cattle were 33.82%, 30.95% and 2.52% respectively. The viability rate of protoscoleces of the fertile cysts isolated from the slaughtered animals were found mostly higher than 70%.