Introduction: Echinococcosis/ Hydatidosis is a Zoonotic disease that occure throught the world. In regard to epidemiology of hydatid disease, study of fertility and viability rate is important.
The aim of present research was to determine the fertility and viability rate of cow hydatid cyst in this region.
Materials & Methods : This descriptive cross – sectional study has been done on 548 cows which were choosen as – randome sampling from all – sacrificed cows in industrial slaughterhouse of Ardabil in 2005 for presence of hydatid cyst and their fertility and viability.
The data were analyzed by SPSS using Chi-square (x2) test for determination of the difference between fertility rate of hydatic cyst in liver and lung of Cows.
Results : In this study among 548 cow surveyed, 181 cow (33%) were infected by hydatid cyst. 11.1% of infected cows were male and (52.9%) of them were female. 31.1% of infection were seen in liver and 43.9% in lung. 25% infection were seen in liver and lung. 93.4% of hydatid cysts were single cavity. 19.3% of cysts were fertile and 80.7% were infertile. 18.23% of them were calcificated cysts and 81.76% of were uncalcified 39.83% of protoscoleces of fertile cysts were a live.
Conclusion : Result of this study show sever contaminashon in cows of this area. They have several reasons for example abundant prosperious pastures, lake of industrial animal husbandary, high population of area animals, presence of stary dogs and infected to parasites. Because of high prevalence of hydatid cysts in cows, it seems to creation of industrial animal husbandary is neseccery for reduction of prevalance and control of disease in this area
