Taeniasis is one of the parasitic zoonotic diseases that could transmit through the consuming of semicooked or raw beef infested with Cysticercosebovis. Irradiation as a safe approach can be applied in order to eliminate parasites from foods. It can be used as a control method to prevent parasitic foodborne diseases. Therefore, in this study the cattle muscles containing live cysts were selected from two slaughterhouses of Alborz province and were subjected for gamma irradiation with different doses (0.5, 0.6, 0.7, 0.8, 0.9, 1 and 1.5) KGY. Afterwards, the samples were stained with Eosin Methylene-Blue and were observed with light microscope to determine the viability of the cysts. The analysis of data was conducted with SPSS version 22. The results indicated that 0.8, 0.9, 1 and 1.5 KGY doses were capable to inactivate viable cysts significantly, with 72%, 82.6%, 90.9% and 91.6%, respectively. Therefore, 1 KGY is recommended as appropriate dose for elimination of C. bovis.

Objective: To present a more accurate method for diagnosis of Cysticercus bovis in slaughtered cattle. Project: Slaughterhouse study. Animal: 3436 cattle. Method: To present a more accurate method for diagnosis of C.bovis in slaughtered cattle 1812 cattle were examined at meat inspection using traditional method. Meanwhile by using standard method for detection of c.bovis at meat inspection in South Africa, Germany and England 145 cattle for each region were examined. In each method the percentage of infection with C.bovis was determined. In traditional method heart, external and internal master and triceps muscles were inspected. Whereas for the method used in Germany and England, heart, external and internal master, oesophagus, diaphragm, tongue and for that of South Africa in addition to these, triceps was also inspected. The best, among the method used, was selected and according to the latter 1189 carcasses were examined. If the accuracy of selected method was statistically superior or similar to the best method, thus it was considered as an alternative or replacement method to the traditional method. Results: By examining of 1182 cattle at meat inspection using traditional method 47  carcasses(2.6%) harboured c.bovis in different organs, whereas using standard method, used in Germany, England and South Africa 7.6% , 6.9% and 6.9% of examined cattle were found to be infected with' C.bovis. There were significant differences between traditional method and standard methods of three different countries us in X2 test. Standard method used in Germany was more accurate than the others, thus it was chosen as our selected method by which 1189 cattle were examined of which ninety cattle (7.6%) were found to be infected with C.bovis, an infection rate comparable to German method. Thus it could be suggested as an alternative or replacement to the traditional method.