Browsing 1987 Onderstepoort Journal of Veterinary Research, Volume 54, 1987 by Title

Browsing 1987 Onderstepoort Journal of Veterinary Research, Volume 54, 1987 by Title

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  • Gummow, Bruce; Herr, S.; Brett, O.L.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    A microtitration serum agglutination test, based on that used for brucellosis, has been developed to detect antibodies in the sera of horses exposed to the contagious equine metritis (CEM) organism. Two known positive sera ...
  • Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Heyne, Heloise; Elliott, E.G.R.; Bezuidenhout, J. Dürr; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    Techniques for the rearing of Amblyomma species to be used in heartwater (Cowdria ruminantium) transmission experiments are discussed. These involve the breeding and maintenance of infected and noninfected strains of ticks. ...
  • Jansen, B.C.; Hayes, M; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    Ten bacterial species were isolated from areas on the skin of Merino sheep affected by a chronic scaly condition leading to retarded wool growth. The growth requirements of the bacteria were studied and it was shown that ...
  • Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Barre, N.; Camus, E.; Bigalke, R.D. (Pretoria : Government Printer, 1987)
    Experiments were conducted with Creole goats and Amblyomma variegatum ticks in Guadeloupe to investigate whether it is possible to transmit Cowdria ruminantium to susceptible hosts with nymphs fed in the larval stage on ...
  • Coetzee, Bridgette B.; Stanford, G.D.; Davis, D.A.T.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    The Shaw larval test, in conjunction with adult tick immersion and stall tests, was utilized to confirm that a field strain of B. decoloratus, from Natal, is highly resistant to the ixodicide fenvalerate (Factor of ...
  • Coetzee, Bridgette B.; Stanford, G.D.; Davis, D.A.T.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    A strain of Boophilus decoloratus, resistant to fenvalerate, was subjected to larval immersion, adult immersion and stall tests using the following classes of ixodicides : organochlorines, organophosphates, a diamidide and ...
  • Durand, Anette M.; Barnard, Marie-Luise; Swanepoel, Martha L.; Engelbrecht, Marie M.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    Resistance to 20 antibiotics of 128 Salmonella and 97 Escherichia coli isolates from various registrable farm feeds was determined. A high frequency of comparatively low levels of resistance was found in both the Salmonella ...
  • Braack, L.E.O.; De Vos, Valerius; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    Monthly population fluctuations of carrion-frequenting blow-flies over a 24-month period were monitored using 2 carrion-baited traps in the southern Kruger National Park (KNP) and 3 in the northern KNP. All species displayed ...
  • Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Holland, C.J.; Logan, L.L.; Mebus, C.A.; Ristic, M.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    Although Cowdria ruminantium has been classified within the tribe Ehrlichia of the family Rickettsiaceae, there has been no extensive study conducted regarding its antigenic relationship to members of the genus Ehrlichia, ...
  • Williams, R.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    A single dilution enzyme-linked immunosorbent assay (ELISA), utilizing a reference serum with a known, predetermined end-titre was used to compute antibody titres of serum samples against African horsesickness virus. ...
  • Horak, Ivan Gerard; Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); MacIvor, K.M. de F.; Petney, T.N.; De Vos, Valerius; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    Large numbers of birds, wild mammals and domestic stock from a variety of localities within the Republic of South Africa were examined for infestation with the ixodid ticks Amblyomma hebraeum and Amblyomma marmoreum. Every ...
  • Erasmus, J.A.; Brand, P.A.J.; Galbraith, Marion M.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    A total of 150 isolates of Staphylococcus aureus were subjected to the tests on the API Staph system. Of these, 50 were also tested by conventional methods, using the same tests as those found on the API Staph strips. Applying ...
  • Horak, Ivan Gerard; Moolman, L.C.; Fourie, L.J.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    A variety of mammal and bird species in the Mountain Zebra National Park, eastern Cape Province, were examined for Ixodes rubicundus. In addition, caracal (Felis caracal) from the park and its vicinity as well as from the ...
  • Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Stewart, C.G.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    The duration of immunity to heartwater normally varies from 6 months to 4 years. In Angora goats it may be difficult to produce a specific immune response with vaccination. Humoral immunity does not appear to play a role ...
  • Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Stewart, C.G.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    Mice develop a specific immune response following infection with the mice strains of heartwater. In the case of the Kümm strain the agent can persist in some tissues for up to 365 days. Transfer of spleen cells from immune ...
  • Krecek, R.C.; Reinecke, R.K.; Malan, F.S.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    Nine Burchell's and 6 Hartmann's mountain zebras were culled during the 3 climatic periods characteristic of the Etosha National Park, South West Africa/Namibia, and were examined for helminths. The Burchell's zebras ranged ...
  • Anonymous; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    No abstract available
  • Scott, G.R.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    A fresh pragmatic classification of the rickettsias has been derived by applying the simplest techniques of numerical taxonomy. One order, the Rickettsiales, containing 3 families, the Rickettsiaceae, Phagosomaphilaceae, and ...
  • Neitz, A.W.H. (Albert Walter Herman); Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Viljoen, Gerrit Johannes; Vermeulen, N.M.J.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    Numerous parameters affect the enzyme-linked immunosorbent assay activity and the assay conditions must therefore be carefully controlled to obtain reproducible results. These parameters include temperature, pH, ionic ...
  • Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Gothe, R.; Bigalke, R.D. (Pretoria : Government Printer, 1987)
    According to their activity profiles tick pheromones can be characterized as assembly pheromones, aggregation/attachment pheromones, pre-attachment or pre-feeding pheromones, attractant sex pheromones, contact sex pheromones, ...