Study On New Attenuated Strain (Sa) Of Theileria Annulata For Cattle Vaccination Against Bovine Theileriosis
2000
Hashemi Fesharaki , Reza
Theileriosis due to Theileria annulata is a dangerous and foetal disease for pure - bred and cross-bred cattle particularly exotic animals. The mortality rate is more than 80%. To protect these animals again st the disease and induce good immunity) two vaccine strains were previously used at an interval of 30-40 days. But because of difficulties in production) control) storage and transportation. of two vaccine strains) it was decided to use only one vaccine strain for vaccination. The study indicated that this new vaccine strain could induce good protective immunity in susceptible animals against acute Theileriosis without any side - effects. The animals particularly milking cows) tolerate the vaccine well. As a result they could resist foetal and acute strains of T. annulata
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