Post-vaccination Seroprevalence Studies on the Cattle Vaccinated Against Tropical Theileriosis in Polatlı Region.

Abstract

This study was carried out to determine the effect of the Tropical theileriosis live schizont vaccine with the application in the field on cattle in Girmeç, Güreş, and Hıdırşeyh villages of Ankara province Polatlı district. For this purpose, the cattle in the villages were divided into 2 age groups under 1 year of age and over 1 year of age. From these, 280 cattle over 1 year of age and 35 cattle under 1 year of age were vaccinated. As the control groups, 37 cattle over 1 year of age and 70 cattle under 1 year of age were not vaccinated. After vaccination, blood was drawn from the vein jugularis of randomly selected cattle by regularly visiting the villages every month and their sera were taken for IFAT, and smears were prepared from blood samples collected from the ear tips of these animals. Seropositivity was 46.0% in the vaccinated under 1 year of age group and 29.1% in the control group. The differences between these two groups’ seropositivity were statistically insignificant (p=0.164). In the cattle over one year of age, seropositivity was 55.6 % in the vaccinated and 15.4% in the control group. The differences between these groups were found to be statistically significant (p=0.001). The rate of proplasm carrier cattle in the groups under 1 year of age is 13.5% in the vaccinated and 13.6% in the control group. The differences between these groups were not statistically significant (p=0.689). In the groups over 1 year of age, these rates are 24.7% in vaccinated cattle and 10.3% in the control group. The differences between these groups were also statistically insignificant (p=0.062). No serious complications were observed in any of the vaccinated groups. Clinical theileriosis was observed only in 3 (1 cow and 2 calves) of the vaccinated cattle. While 2 of the infected animals recovered without any treatment, 1 calf died. As a result, it was concluded that the region was stable for Tropical theileriosis thus, the cattle and newborn calves that would be introduced to this region should be vaccinated.