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

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

Sort by: Order: Results:

  • The genome of Anaplasma : DNA base composition and DNA/DNA hybridization 
    Ambrosio, R.E.; Potgieter, F.T.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    The Tm value of DNA from Anaplasma centrale and Anaplasma marginale was found to be 87,1 °C and 89,3 °C, respectively. The G + C content, calculated from the Tm, was 45,1% for A. centrale and 48,5 % for A. marginale. ...
  • Heartwater in hosts other than domestic ruminants 
    Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Oberem, P.T.; Bezuidenhout, J. Dürr; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    The importance of further research on the susceptibility of wild hosts to Cowdria ruminantium infection is discussed. The literature is surveyed and an attempt is made to divide the various species described into susceptible ...
  • Heartwater serology : some problems with the interpretation of results 
    Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Du Plessis, J.L.; Camus, E.; Oberem, P.T.; Malan, Letitia; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    Antibodies in the sera of domestic ruminants that have been infected with Ehrlichia bovis and other ehrlichial agents cross-react with the Kümm strain of Cowdria ruminantium used in the indirect fluorescent antibody test ...
  • Heartwater. An overview of the clinical signs, susceptibility and differential diagnoses of the disease in domestic ruminants 
    Van de Pypekamp, H.E.; Prozesky, L.; Bigalke, R.D. (Pretoria : Government Printer, 1987)
    Heartwater is a frequently fatal tick-borne disease of ruminants caused by Cowdria ruminantium. In domestic ruminants the incubation period varies considerably and depends on the route of infection, virulence of the ...
  • Heartwater. The artificial transmission of Cowdria ruminantium in domestic ruminants and mice 
    Prozesky, Leon; Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    The artificial transmission of Cowdria ruminantium with infected blood, organ homogenates, peritoneal macrophages, tick stabilate and tissue culture cells is discussed. Organ homogenates prepared from the myocardium, spleen, ...
  • Heartwater: the development and life cycle of Cowdria ruminantium in the vertebrate host, ticks and cultured endothelial cells 
    Prozesky, L.; Du Plessis, J.L.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    Various aspects of the development and life cycle of Cowdria ruminantium are discussed. C. ruminantium is transmitted transstadially by certain Amblyomma species. Apparently organisms initially develop in the gut epithelial ...
  • Heartwater: the morphology of Cowdria ruminantium and its staining characteristic in the vertebrate host and in vitro 
    Prozesky, L.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    The morphology of Cowdria ruminantium is described and its staining characteristics in the vertebrate host and in vitro are summarized. Morphologically, the organisms are characterized in the cytoplasm of endothelial cells, ...
  • The historical background and global importance of heartwater 
    Bezuidenhout, J.D.; Provost, A.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    The first written record of what probably could have been heartwater originates from South Africa and dates back to 1838. Since then, the disease was described from almost all the African countries south of the Sahara ...
  • Identification of drugs effective against Cowdria ruminantium using a mouse screening system 
    Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); McHardy, N.; MacKenzie, P.K.I.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    Heartwater is a tick-transmitted rickettsial infection of ruminants, caused by Cowdria ruminantium. The tetracyclines are the only compounds available for therapy of the disease. A screen, using mice infected with C. ...
  • The identification of factors capable of reversing the core-mediated inhibition of the bluetongue virus transcriptase 
    Huismans, H. (Henk), 1942-; Van Dijk, A.A.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    The in vitro transcription reaction of bluetongue virus (BTV) is characterized by a core-mediated, temperature-dependent inhibition at high core concentrations and temperatures (Van Dijk & Huismans, 1980; Huismans, Van ...
  • Immunization of sheep against the larval stage of Taenia multiceps 
    Verster, Anna; Tustin, R.C.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    A trial with 200 ewes and 127 lambs showed that vaccination of lambs with 2 doses of Oncosphere Secretory Antigen (OSA) 4 weeks apart, at either 4-8 and 8-12 weeks or at 12-16 and 16-20 weeks of age, was equally effective ...
  • The incidence of Coxiella burnetii antibodies in cattle in the Transvaal 
    Gummow, Bruce; Poerstamper, N.; Herr, S.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    With the use of the complement fixation test, 8 900 cattle were tested for antibodies to Coxiella burnetli. These were randomly selected from 178 different farms in 37 districts in the Transvaal. The percentage of cattle ...
  • The infection and treatment method of vaccination against heartwater 
    Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Van der Merwe, Lente; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    The history of vaccination techniques against heartwater and the development of the infection and treatment method are reviewed briefly. Present techniques and their shortcomings are defined and possible areas of improvement ...
  • An investigation into the clinical pathological changes and serological response in horses experimentally infected with Babesia equi and Babesia caballi 
    De Waal, D.T.; Van Heerden, J.; Potgieter, F.T.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    Serologically negative horses, as determined with the indirect fluorescent antibody test (IFA), were infected with Babesia equi and 60 days later with Babesia caballi. The only clinical signs of disease observed in these ...
  • The isolation of a paramyxovirus from pigeons in South Africa 
    Pienaar, Anna C.E.; Cilliers, J.A.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    A paramyxovirus was isolated from diseased pigeons, submitted to the Poultry Section of the Veterinary Research Institute, Onderstepoort, for post-mortem examination. The mean death time for the isolates was determined ...
  • The isolation of Leptospira interrogans serovar pomona and related serological findings associated with a mixed farming unit in the Transvaal 
    Gummow, Bruce; De Lange, J.F.; Turner, G.V.; Redman, A.R.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    This is the first known isolation in the Republic of South Africa (RSA) of the serovar pomona from the organs of porcine foetuses as well as from the renal lymphnodes of slaughter pigs showing chronic nephritis. In addition, ...
  • Leptospirosis as a cause of "white spot" kidneys in South African pig abattoirs 
    Hunter, Pamela; Van der Vyver, F.H.; Henton, Marijke M.; Herr, S.; De Lange, J.F.; Selmer-Olsen, Anne; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    The incidence of isolation of Leptospira sp. from the kidneys of slaughter pigs with “white-spot" macroscopic lesions was determined. Histology and general bacteriology were performed. Leptospira pomona was isolated from ...
  • Metabolism and genetics of chlamydias and rickettsias 
    Williams, J.C.; Vodkin, M.H.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    Chlamydial and rickettsial diseases pose a hazard to man and to domesticated and wild animals. The virulence mechanisms which aid the establishment of these obligate intracellular parasites in the eukaryotic host are ...
  • Morphology and development of Cowdria ruminantium in Amblyomma ticks 
    Kocan, K.M.; Bezuidenhout, J.D.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    The morphology and development of Cowdria ruminantium have been studied in Amblyomma hebraeum and A. variegatum. Colonies of C. ruminantium have so far been demonstrated microscopically in gut, salivary gland cells, ...
  • Musca nevilli sp. nov. (Diptera : Muscidae), a dung-breeding fly from South Africa 
    Kleynhans, K.P.N.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)
    The adults, puparium and 3rd instar larva of a dung-breeding fly, Musca nevilli sp. nov. are described in the subgenus Eumusca. The adults are characterized by 4 dark postsutural mesonotal vittae, 1-2 bristles dorsally on ...