Browsing 1952 Onderstepoort Journal of Veterinary Research, Volume 25, Number 3 & 4, 1952 by Issue Date

Browsing 1952 Onderstepoort Journal of Veterinary Research, Volume 25, Number 3 & 4, 1952 by Issue Date

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  • Reinach, Norman; Louw, J.G.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1952)
    An experiment has been carried out in which the relative availability to young rats of the phosphorus in bone meal, bone ash, dicalcium phosphate and tricalcium phosphate has been ascertained. Live weight gains, the ash ...
  • Groenewald, J.W.; Myburgh, S.J.; Louw, J.G.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1952)
    (1) In a continuation of the study of the digestibility of the same lucerne hay by the same steers at different times further evidence of a period influence on digestibility was obtained. This influence could be reduced ...
  • Veldsman, D.P.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1952)
    Leaves and stems of the plant, Pachystigma pygmaeum (gousiektebossie), collected at Kaalfontein on 20th October, 1950, were subjected to a chemical investigation. Four crystalline substances were isolated: a lactone, ...
  • Sterne, Max; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1952)
    The efficiency of Muir's capsule stain could be much increased by adding a surface-active agent (CTAB) to the primary carbol-fuchsin stain, and by using 0•1 per cent. alkaline methylene blue as a counter stain. Heating ...
  • Henrici, Marguerite; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1952)
    The daily march of assimilates in different fodder plants, lucerne, the Karoo bush Pentzia incana, the Gramineae Algerian oats and Panicum minus and Tribulus terrestris, is discussed. The assimilates were determined under ...
  • Louw, P.G.J.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1952)
    (1) A cardiac glycoside, transvaalin, with molecular formula C₃₆H₅₂O₁₃, was isolated from Urginea burkei Bkr. (2) Transvaalin has the typical raticidal properties of scilliroside when dosed per os or injected ...
  • Anonymous; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1952)
  • Jansen, B.C.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Pretoria : The Government Printer, 1952)
    The presence of Leucocytozoon in three and Haemoproteus in two members of the family Columbidae is recorded.
  • Van Drimmelen, G.C.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1952)
  • Weiss, K.E.; Haig, D.A.; Alexander, R.A.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1952)
    1. The value of aureomycin in the treatment of heartwater has been established. It is considerably more effective than the sulphonamides. 2. The minimal therapeutic dose for sheep appears to be 2•5 mg. per lb. administered ...
  • Jansen, B.C.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1952)
    (1) The presence of Eperythrozoon parvum in a splenectomised pig at Onderstepoort is recorded. (2) Preliminary studies on the transmission of this parasite suggest that Haematopinus suis may be a vector.
  • Kaschula, V.R.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1952)
    The use is described of Beaudette's Roakin strain live virus intra-ocularly on fowls previously vaccinated with an aluminium hydroxide adsorbed formalinized chick embryo vaccine. Good response to this combination was ...
  • Kaschula, V.R.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1952)
    When virus was dosed per os with virulent Newcastle disease virus and daily examinations were made of virus in their pooled faeces, virus was recovered on the 12th day. No H.I antibodies were produced. The challenge ...
  • Polson, A.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1952)
    Since there is no reason to doubt the generally accepted conception that the concentration of ƴ globulins is an accurate index of humoral immunity, it may be concluded that in bovines there is no transplacental ...
  • Fourie, P.J.J.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1952)
    In testing the Onderstepoort herd of experimental animals, totalling 224 animals, 10 positive reactors were found in 1949. Since tuberculosis was eradicated from this herd in 1940 by slaughtering all reactors and doubtful ...
  • Polson, A.; Malherbe, W.D.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1952)
    The sera of dogs suffering from three diseases commonly encountered in South Africa, viz. babesiosis, rickettsiosis and distemper, have been examined electrophoretically and compared with normal sera. Diagrams of the ...
  • Du Toit, R.; Fiedler, O.G.H.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1952)
    1. The more recent literature on the blowfly problem in South Africa is reviewed and the general conclusions regarding control measures discussed. 2. The larvicidal properties of a number of the new synthetic insecticides for ...
  • Truter, G.J.; Louw, J.G.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1952)
    A method of preparing low-fluorine water solutions of superphosphate as a source of phosphate for farm animals is described. It consists of the preparation of a concentrated solution, sedimentation of the insoluble ...
  • Myburgh, S.J.; Louw, J.G.; Groenewald, J.W.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1952)
    Employing an improved nitrogen balance method the influence of mild heat treatment on the digestibility and biological value of a mixture of plant proteins has been determined. The heat treatment resulted in a small ...
  • Jansen, B.C.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Pretoria : Government Printer, 1952)
    (1) A new species of protozoan parasite in the Cape dassie is described for which the name Babesia thomasi is proposed. (2) This parasite is only slightly pathogenic for normal animals but fatal for splenectomised Cape ...