Browsing 1990 Onderstepoort Journal of Veterinary Research, Volume 57, 1990 by Author "De Waal, D.T."

Browsing 1990 Onderstepoort Journal of Veterinary Research, Volume 57, 1990 by Author "De Waal, D.T."

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  • Identification of the antigenic proteins of Cowdria ruminantium 
    Neitz, Albert Walter Herman; Rossouw, Mirinda; De Waal, D.T.; Du Plessis, J.L.; Van Gas, Letitia; Brett, Susan; Verwoerd, Daniel Wynand (Published by the Government Printer, Pretoria., 1990)
    Immunoblotting of Cowdria ruminantium proteins with sheep or bovine antiserum identified 2 antigenically conserved proteins, one being an immunodominant 31 kDa and the other a minor 27 kDa protein. These proteins are present ...
  • The isolation and transmission of an unidentified Babesia sp. to cattle by Hyalomma truncatum Koch 1844 
    De Waal, D.T.; Potgieter, F.T.; Combrink, M.P.; Mason, T.E.; Verwoerd, Daniel Wynand (Published by the Government Printer, Pretoria., 1990)
    An unidentified Babesia sp. which causes a mild disease in cattle was isolated in a splenectomized ox that received pooled blood from field cattle. That this organism is pleomorphic and resembles Babesia occultans makes ...
  • The transovarial transmission of Babesia caballi by Hyalomma truncatum 
    De Waal, D.T.; Verwoerd, Daniel Wynand (Published by the Government Printer, Pretoria., 1990)
    Babesia caballi, isolated from a horse that originated from South West Africa/Namibia, was transmitted transovarially by adult Hyalomma truncatum. B. caballi proved to be highly infective for adult H. truncatum. Forty-five ...