Browsing 1981 Onderstepoort Journal of Veterinary Research, Volume 48, 1981 by Author "De Vos, A.J."

Browsing 1981 Onderstepoort Journal of Veterinary Research, Volume 48, 1981 by Author "De Vos, A.J."

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  • The isolation of Theileria? taurotragi in South Africa 
    De Vos, A.J.; Roos, J.A.; Steyn, P.J.J.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Published by The Government Printer, Pretoria, 1981)
    In 3 out of 4 attempts strains of a Theileria sp. of low virulence were isolated in the laboratory by feeding adult Rhipicephalus appendiculatus collected from the field on susceptible cattle. One of the strains, previously ...
  • Observations on the transmission of Theileria mutans in South Africa 
    De Vos, A.J.; Roos, J.A.; Steyn, P.J.J.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Published by The Government Printer, Pretoria, 1981)
    Four isolates of Theileria mutans obtained from geographically distant parts of South Africa by sub inoculation of infected blood were found to be readily transmitted by the bont tick Amblyomma hebraeum. All attempts to ...
  • Studies on a bovine Babesia transmitted by Hyalomma marginatum rufipes Koch, 1844 
    Gray, J.S.; De Vos, A.J.; Steyn, P.J.J.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Published by The Government Printer, Pretoria, 1981)
    A Babesia sp. was recently observed in Hyalomma marginatum rufipes and found to be transmissible to bovines. Further observations were carried out on this parasite and a study made of the morphology of stages in both ...
  • Theileria? taurotragi : a probable agent of bovine cerebral theileriosis 
    De Vos, A.J.; Bessenger, R.; Banting, L.F.; Steyn, P.J.J.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Published by The Government Printer, Pretoria, 1981)
    A case of bovine cerebral theileriosis was confirmed at autopsy on a farm where 4 animals out of 70 died. All were less than 2 years old and all showed nervous signs. Serologically, no evidence was found of Theileria ...