The Cattle Fever Tick Eradication Program was the first parasite eradication program of veterinary importance in the United States and is considered to be one of the greatest disease eradication programs of all time. The program's utilization of pasture vacation and dipping of cattle in acaricide...

A sporozoite stabilate (St.199) of T. parva was obtained by feeding nymphal Rhipicephalus appendiculatus on an African buffalo (S. caffer) and was used to immunize cattle by the infection and treatment (with Terramycin [oxytetracycline]) method. Nymphal ticks were applied to one of the steers 90...

Two mathematical models were developed that investigate the transmission dynamics of T. parva by Rhipicephalus appendiculatus to cattle in endemically stable areas. A method of estimating the rate of infection to cattle of T. parva at the endemically stable state is given. Empirical estimates of...

Blood composition of 4387 cattle with or without serological evidence of exposure to infectious and parasitic agents were compared. Group D cattle were serologically positive to bluetongue, bovine leukosis or haemo- and ectoparasites [species not given], and group H were negative. Significantly...

Five crossbred cattle were immunized with a whole antigen extract of H. a. anatolicum. On challenge infestation with 50 pairs of H. a. anatolicum the female ticks showed a significant decrease in engorged weight and egg mass weight and increase in preoviposition period compared to ticks on 3...

Trypanotolerance of N'Dama cattle is reviewed and also resistance to gastrointestinal helminths, ticks and some tick-transmitted diseases (dermatophilosis, anaplasmosis and babesiosis).

Theileria parva bovis (a protozoan causing January disease of cattle in Zimbabwe) was transmitted experimentally by nymphs of the tick Rhipicephalus appendiculatus to 6 of 14 cattle. Animals either became seriously ill or did not become infected. Attempts to induce mild or inapparent infection by...

Between April and September, 1990, blood samples were taken from 22 cattle in 3 herds. In indirect fluorescent antibody tests on 132 blood samples all 22 cattle were positive for antibodies to Babesia bigemina, 13 for B. bovis and none for B. divergens. B. bigemina and B. bovis were detected in...

In two trials, T. parva bovis (which causes 'January disease' of cattle in Zimbabwe) produced a carrier state, over the 7-12 months after infection. Very severe clinical reactions were caused by infections from small numbers (29-43) of adult Rhipicephalus appendiculatus ticks, which had engorged on ...

Susceptible Ankole (Sanga: Bos indicus/Bos taurus) and crossbred Ankole × Jersey (B. taurus) and Ankole × Sahiwal (B. indicus) cattle derived from a farm in Rwanda with no recent history of theileriosis were infected with Theileria parva stocks from Rwanda either by feeding infected Rhipicephalus...