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1994 Onderstepoort Journal of Veterinary Research, Volume 61, 1994: Recent submissions

  • Putative avocado toxicity in two dogs 
    Buoro, I.B.J.; Nyamwange, S.B.; Chai, D.; Munyua, S.M.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    Two dogs were seen at the University Veterinary Teaching Hospital, Nairobi, Kenya, both having histories of dyspnoea, progressively enlarging abdomens, anasarca, ascites, pleural and pericardial effusion, and pulmonary ...
  • Afrotropical Culicoides : description and comparison of the pupae of seven species of the Similis supergroup (Diptera: Ceratopogonidae) 
    Nevill, Hilda; Dyce, A.L.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    The pupae of Culicoides exspectator Clastrier, C. kobae Cornet & Chateau, C. micheli Cornet & Chateau, C. olyslageri Kremer & Nevill, C. ravus De Meillon and C. (Synhelea) tropicalis Kieffer are described and illustrated ...
  • Ecology and epidemiology of anthrax in the Etosha National Park, Namibia 
    Lindeque, P.M.; Turnbull, P.C.B.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    Analysis of mortality records has revealed distinct patterns in the incidence of anthrax in elephant and plains ungulates. The seasonal peak among the former is in November at the end of the dry season, while among the ...
  • Pseudorabies and transmissible gastroenteritis : a serological survey in South Africa 
    Williams, R.; Esterhuysen, J.J.; Robinson, J.T.R.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    Two specific and sensitive, indirect enzyme-linked immunosorbent assays (ELISAs) utilizing a protein G-peroxidase conjugate were developed to detect antibodies to the pseudorabies virus (PRV) and the transmissible ...
  • Osteology of the pelvic limb of the African elephant (Loxodonta africana) 
    Smuts, M.M.S. (Malie Marie Sophie), 1933-; Bezuidenhout, A.J. (Abraham Johannes), 1942-; Verwoerd, Daniel Wynand; Seegers, Christine D. (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    The pelvic girdle was characterized by large, transversely-placed ilial wings. The femur was the longest bone of the skeleton and its fovea capitis was situated caudomedially between the epiphyseal line and the articular ...
  • Changes in the blood-gas status of sheep with experimentally induced heartwater 
    Van Amstel, S.R.; Reyers, Fred; Myburgh, Elsbe; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    The blood-gas status of seven sheep with experimentally induced heartwater during the acute and terminal stages was investigated. Changes in blood gas included a decline in arterial oxygen tension (pO₂) combined with a ...
  • Evaluation of a short-term in vitro growth-inhibition test to determine susceptibility of Trypanosoma vivax stocks to various trypanocides 
    Zweygarth, Erich; Kaminsky, R.; Moloo, S.K.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    Two Trypanosoma vivax stocks were initiated in culture with tsetse or culture-derived metacyclics. They were propagated axenically as bloodstream trypomastigotes at 35°C in 4% C0₂ in air. Populations of trypanosomes were ...
  • Guide for authors 
    Anonymous; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
  • The Theiler Memorial Trust Award 
    Verwoerd, Daniel Wynand; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
  • Bovine besnoitiosis : transfer of colostral antibodies with observations possibly relating to natural transmission of the infection 
    Shkap, Varda; Pipano, E.; Marcus, S.; Krigel, Y.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    Colostral antibodies to B. besnoiti were detected by immunofluorescence in four calves born to two Besnoitia-infected dams, with titres ranging from 1:64 to 1:1024. A specific antibody titre of 1:1024 was found in colostrum ...
  • Bile enhances the infectivity of third stage larvae of Dictyocaulus filaria 
    Titoy, G.A.P.; Schwan, Ernst Volker; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    Incubating metacyclic larvae of Dictyocaulus filaria in ovine bile solution prior to per os infection significantly enhanced their infectivity to sheep.
  • Epidemiology of African horsesickness : duration of viraemia in zebra (Equus burchelli) 
    Barnard, B.J.H.; Bengis, Roy G.; Keet, D.F.; Dekker, E.H.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    The viraemic period of African horsesickness is significantly longer in experimentally infected zebra than in horses. The virus could be isolated 40 d post-infection from blood and 48 d post-infection from spleen. The ...
  • Epidemiology and control of trypanosomosis 
    Chadenga, V.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    Tsetse-transmitted trypanosomosis remains a major constraint to the development of agriculture, particularly to that of livestock production in sub-Saharan Africa. It is estimated that 10 million km² of Africa are tsetse ...
  • A survey of the incidence and importance of the tick-borne diseases heartwater, redwater and anaplasmosis in the heartwater-endemic regions of South Africa 
    Stoltsz, Wilhelm Heinrich; Du Plessis, J.L.; De Waal, D.T.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    In an almost 50% response to a survey questionnaire, farmers in the heartwater-endemic regions of South Africa indicated that they were experiencing losses of 1,3, 0,3 and 0,2% in cattle due to heartwater, redwater and ...
  • Isolation and preliminary characterization of a caprine rotavirus 
    Da Costa Mendes, Vasco Manuel; De Beer, M.C.; Goosen, G.H.; Steele, Andrew Duncan; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    Five cytopathic rotavirus strains were isolated in MA 104 cells from stool specimens of kids with diarrhoea. Pre-treatment of the virus with trypsin and incorporation of low levels of trypsin in the maintenance medium ...
  • Subject index 
    Anonymous; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
  • Author index 
    Verwoerd, Daniel Wynand (Pretoria : Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
  • The virtual absence of Culicoides imicola (Diptera: Ceratopogonidae) in a light-trap survey of the colder, high-lying area of the eastern Orange Free State, South Africa, and implications for the transmission of arboviruses 
    Venter, Gert Johannes; Meiswinkel, R.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    Altogether 52 078 Culicoides biting midges of 35 species were collected during February 1990 and 1993 in 40 light-trap collections made on 17 cattle and/or sheep farms in the Bethlehem and Fouriesburg districts of the ...
  • A bioequivalence and pharmacokinetic evaluation of two commercial diminazene aceturate formulations administered intramuscularly to cattle 
    Gummow, Bruce; Swan, Gerry E.; Du Preez, J.L.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    The bioequivalence of the diminazene formulation Veriben (Centaur) was determined in cattle (n=10) by means of a single-dose, randomized cross-over experiment. The results of nine statistical procedures commonly used for ...
  • The impact of nagana 
    Connor, R.J.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    The disease in cattle, called nagana in Zulu land, was linked with trypanosomal parasitaemia and tsetse flies. Nagana occurs in livestock throughout the tsetse belts of Africa. Wild animals are tolerant of trypanosomal ...