Browsing 1956 Onderstepoort Journal of Veterinary Research, Volume 27, Number 1 & 2, 1956 by Title

Browsing 1956 Onderstepoort Journal of Veterinary Research, Volume 27, Number 1 & 2, 1956 by Title

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  • Canine distemper-immunization with avianised virus 
    Haig, D.A.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1956)
    1. In a brief review of the literature, methods which have been advocated for the immunisation of dogs against distemper and possible reasons for failures in immunity are discussed. 2. The propagation of Green's distemperoid ...
  • Complement fixation with horsesickness viruses 
    McIntosh, B.M.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1956)
    Fixation of complement bas been obtained using antigens prepared from suckling mouse brains and antisera from hyperimmune guinea-pigs. With horsesickness viruses the complement fixation test is less type specific than ...
  • A consolidation of our knowledge of the transmission of tick-borne diseases 
    Neitz, W.O.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1956)
    (1) Ticks concerned in the transmission of Babesia spp., Aegyptianella sp., Theileria sp., Gonderia spp., Anaplasma spp., Borrelia spp., viruses and "toxins" responsible for diseases in livestock have been enumerated. (2) ...
  • The cytopathogenic action of bluetongue virus on tissue cultures and its application to the detection of antibodies in the serum of sheep 
    Haig, D.A.; McKercher, D.G.; Alexander, R.A.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1956)
    Cytopathogenic activity by egg adapted strains of bluetongue virus for sheep kidney cells in culture, and the neutralization of this activity by homologous antiserum are described. The possible applications of this ...
  • A discussion on the classification of the Theileridae 
    Neitz, W.O.; Jansen, B.C.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Pretoria : The Government Printer, 1956)
    The morphological similarity between the members of the genera Theileria and Gonderia in domestic animals makes their differentiation extremely difficult. In making a differential diagnosis veterinarians and zoologists ...
  • The experimental transmission of Theileria ovis by Rhipicephalus evertsi 
    Jansen, B.C.; Neitz, W.O.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1956)
    1. The transmission of Th. ovis by the two host tick Rh. evertsi was successful in six susceptible splenectomized sheep. 2. Th. ovis was picked up by the larvae and nymphae and transmitted by the ensuing adults. 3. ...
  • A new method of treatment for sheep infested with the larvae of the sheep nasal-fly, Oestrus ovis. L. in the Union of South Africa 
    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, 1956)
  • New species of sucking lice from South African game 
    Fiedler, O.G.H.; Stampa, S.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1956)
    During the course of a study on Anoplura material in the Onderstepoort collection, several specimens of the genus Linognathus were found which seemed to be incorrectly classified. A comparison with the respective types ...
  • The protection of sheep against blowfly strike. IV. An evaluation of certain organic phosphorus compounds 
    Fiedler, O.G.H.; Du Toit, R.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1956)
    An evaluation of the phosphorus insecticides by means of the bio-assay method has revealed that certain of these compounds combine very good larvicidal action with outstanding diffusing power in the fleece of living ...
  • Strain 19 Brucella vaccine. I. Production of vaccine by the shake flask technique 
    Van Drimmelen, G.C.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1956)
    A method for the production of Brucella abortus Strain 19 Vaccine by a shake flask, aerated liquid culture technique is described.
  • Strain 19 Brucella vaccine. II. The preparation of freeze-dried live vaccine 
    Van Drimmelen, G.C.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1956)
    A freeze-dried Brucella vaccine has been developed which can be issued with all the usual guarantees, e.g. 60 x 10⁹ viable organisms per dose viable for an extended period. This vaccine has been prepared in concentrated ...
  • Studies on the aetiology of sweating sickness 
    Neitz, W.O.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1956)
    1. An account is given of a series of experiments on calves and pigs on which infective Hyalomma transiens were allowed to feed for periods of variable duration. 2. It was determined that the causal agent can be transmitted ...
  • Studies on tuberculosis in dogs, and on a case of human tuberculosis contracted from a dog 
    De Kock, G.; Le Roux, J.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1956)
    1. Apparently this is the first case on record in which tuberculosis of the skin in man was contracted from an infected dog through a wound. The infection probably occurred when handling the heavily infected lymph nodes and ...
  • Ticks in the South African Zoological Survey Collection. Part VIII. Two East African ticks 
    Theiler, Gertrud; Walker, J.B.; Wiley, A.J.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1956)
    (1) The description of the male and the female is given; the immature stages are described for the first time, the description is based on material raised by Miss Walker at Kabete. (2) The known hosts and its geographical ...
  • The use of tissue culture propagated bluetongue virus for complement fixation studies on sheep sera 
    Shone, D.K.; Haig, D.A.; McKercher, D.G.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1956)
    The development of a complement-fixation test possessing broad specificity, in which tissue culture propagated virus is used as antigen, for studies on bluetongue in sheep is described.
  • Wesselsbron virus - a virus not previously described, associated with abortion in domestic animals 
    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, 1956)
    1. There has been isolated from a lamb a pantropic virus with neurotropic properties and a well-marked affinity for embryonic tissue. 2. In the field the vectors are mosquitoes which have yet to be identified ...
  • Zoological Survey of the Union of South Africa. Tick survey. Part IX. The distribution of the three South African Hyalommas or bontpoots 
    Theiler, Gertrud; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E. (Published by The Government Printer, Pretoria, 1956)
    SUMMARY 1: 1. The distribution of H. truncatum (syn. H. transiens) is given in terms of political divisions. 2. The limiting factor to its distribution is seen to be increasing humidity. It is present up to 20 inches per ...