Browsing 1981 Onderstepoort Journal of Veterinary Research, Volume 48, 1981 by Issue Date

Browsing 1981 Onderstepoort Journal of Veterinary Research, Volume 48, 1981 by Issue Date

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  • Attempted transmission of canine ehrlichiosis to the vervet monkey (Cercopithecus pygerythrus) 
    Van Heerden, Joseph; Goosen, D.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)
    Blood from a domestic dog infected with Ehrlichia canis was injected into 3 adult vervet monkeys Cercopithecus pygerythrus. The monkeys did not develop any clinical or haematological signs of disease, nor did they seem ...
  • Brucellosis in free-living African buffalo (Syncerus caffer) : a serological survey 
    Herr, S.; Marshall, C.; 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)
    The rose bengal and complement fixation tests were successfully applied to buffalo (Syncerus caffer) sera. An overall occurrence of 23% positive reactors was obtained, but Brucella infection does not appear to act as an ...
  • The influence of dithiosemicarbazone on the immunity of sheep to heartwater 
    Du Plessis, J.L.; 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 out of 9 sheep, immune to heartwater and subsequently treated with gloxazone, showed a febrile reaction when they were challenged 6 months later, but the same number of untreated controls also developed this reaction. ...
  • Attempts to transmit Anaplasma marginale with Hippobosca rufipes and Stomoxys calcitrans 
    Potgieter, F.T.; Sutherland, B.; Biggs, H.C.; 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)
    Three attempts to transmit anaplasmosis with field collections of Hippobosca rufipes were unsuccessful, despite the fact that the flies had been fed initially on splenectomized cattle acutely infected with Anaplasma ...
  • Freeze-drying of Anaplasma marginale 
    Potgieter, F.T.; Bester, J.B.; 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)
    Heparinized whole blood, heavily parasitized with Anaplasma marginale, was collected from 3 splenectomized oxen. Buffered lactose peptone (BLP) was added in equal volumes as a stabilizer and the mixture lyophilized in ...
  • Notes on African Haemaphysalis ticks. XIII. Identity of H. (Rhipistoma) cooleyi, a parasite of the rock hyrax in South Africa (Acarina: Ixodidae) 
    Hoogstraal, H.; Wassef, Hilda Y.; 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)
    The lectotype male, allotype female, and paratype nymph of Haemaphysalis (Rhipistoma) cooleyi Bedford, 1929, a parasite of the rock hyrax, Procavia capensis, in the Transvaal, are redescribed and illustrated to provide ...
  • 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 ...
  • Author index 
    Anonymous; Steyn, P.J.J.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verwoerd, Daniel Wynand; Walker, Jane B.; Verster, Anna Johanna Maria (Pretoria : The Government Printer, 1981)
  • Isolation and transmission of an unidentified Babesia sp. infective for cattle 
    Thomas, Shan E.; Mason, T.E.; 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)
    Engorged adult female ticks submitted from farms in South Africa were routinely screened for protozoan parasites by examination of haemolymph smears. An unidentified Babesia sp. was found in Hyalomma marginatum rufipes and ...
  • A comparative study of the toxicity of Fusarium verticillioides (= F. moniliforme) to horses, primates, pigs, sheep and rats 
    Kriek, N.P.J.; Kellerman, T. Stephanus; Marasas, Walter F.O. (Walter Friedrich Otto); 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)
    An isolate of Fusarium verticillioides (MRC826) that induced experimental leukoencephalomalacia, also caused acute toxicity when fed to pigs and administered per rumen fistula to sheep. Pigs developed severe pulmonary ...
  • The role of integumental glands in the social and mating behaviour of the hunting dog Lycaon pictus (Temminck, 1820) 
    Van Heerden, Joseph; 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)
    The marking and mating behaviour of captive hunting dogs, Lycaon pictus, is described. Urine scent-marking was the most frequent marking behaviour observed, but anal dragging, body-rolling and body-rubbing were also ...
  • Schistosoma Weinland, 1858 from Hippopotamus amphibius Linnaeus, 1758 in the Kruger National Park 
    Pitchford, R.J.; Visser, P.S.; 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)
    Adults of Schistosoma edwardiense Thurston, 1964, were recovered from Hippopotamus amphibius in the Kruger National Park. Small round to oval Schistosoma margrebowiei-like eggs, presumed to be those of S. edwardiense, were ...
  • The efficacy of bacteriological procedures for the isolation of Brucella abortus from abattoir material 
    Herr, S.; Roux, D.; 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 process of emulsifying and centrifuging abattoir specimens before plating out is described. Brucella abortus was isolated more successfully by this process than by conventional methods, especially in low grade infections. ...
  • 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 ...
  • The haemocytology and histology of the haemopoietic organs of South African freshwater fish. IV. Ultrastructure of some cells of Clarias gariepinus and Sarotherodon mossambicus 
    Boomker, Jacob Diederik Frederik; 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)
    This paper describes the ultrastructure of several cells found in the blood and haemopoietic tissues of the catfish (Clarias gariepinus) and the Mozambique bream (Sarotherodon mossambicus). The cells are haemocytoblasts, ...
  • A rapid quantitative colorimetric determination of blood acetone applied to the assessment of ketosis in fasted pregnant ewes 
    Van der Walt, J.G.; Procos, J.; Hunter, Gael; 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 simple, accurate, colorimetric method for determining blood acetone as an adjunct to the enzymic method of estimating the other ketones was developed and tested on a group of fasted pregnant ewes. Acetone reacted with ...
  • Studies on the physiopathology of chronic obstructive pulmonary disease in the horse. IV. Blood gas and acid-base values at rest 
    Littlejohn, A.; Bowles, Felicity; 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)
    Radiometer Blood Micro-system 2 was used in studies designed to, (a) compare the mean blood gas and acid-base values of 38 normal horses and 20 horses with chronic obstructive pulmonary disease (COPD), (b) determine the ...
  • Rhipicephalus zambeziensis sp. nov., a new tick from eastern and southern Africa, together with a redescription of Rhipicephalus appendiculatus Neumann, 1901 (Acarina, Ixodidae) 
    Walker, Jane B.; Norval, R.A.I.; Corwin, M.D.; 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)
    All stages of Rhipicephalus zambeziensis sp. nov. are described from laboratory-reared specimens of a strain originating from cattle near West Nicholson, Gwanda District, Zimbabwe. The redescription of all stages of ...
  • Attenuation of turkey meningo-encephalitis virus in BHK21 cells 
    Barnard, B.J.H.; Geyer, H.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)
    Turkey meningo-encephalitis virus was adapted to BHK21 cell culture. Cytopathic effects were characterized by rounding and detachment of cells within 48 hours. Attenuation was achieved by 41 successive passages in BHK21 ...
  • An investigation into the toxic principle in eggs of the tick Amblyomma hebraeum 
    Prozesky, Leon; Neitz, Albert Walter Herman; Bezuidenhout, J. Dürr; Putterill, John Fraser; Potgieter, D.J.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 purification procedure involving iso-electric focusing by means of which a toxic principle may be obtained in a pure form from crude egg extracts of Amblyomma hebraeum is described. The molecular mass of the toxin is ...