Browsing 1977 Onderstepoort Journal of Veterinary Research, Volume 44, 1977 by Issue Date

Browsing 1977 Onderstepoort Journal of Veterinary Research, Volume 44, 1977 by Issue Date

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  • Horak, Ivan Gerard; Butt, M.J.; De Kock, V.E.; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Bigalke, R.D.; Cameron, Colin McKenzie; Walker, Jane B. (The Government Printer,Pretoria, 1977)
    During a period of 13 months, 130 goats' heads, obtained from the Johannesburg Municipal Abattoir, were examined for infestation with Oestrus ovis. Infestation was present in 73,8% of the heads and the mean burden comprised ...
  • Londt, J.G.H.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (The Government Printer, Pretoria, 1977)
    Studies on the duration of the oviposition and incubation periods of Boophilus decoloratus (Koch, 1844) revealed that these non-parasitic periods are temperature dependent, increase in temperature causing shortening of the ...
  • Smuts, M.M.S. (Malie Marie Sophie), 1933-; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Pretoria : The Government Printer, 1977)
    The arterial supply to the cervical vertebrae of the ox was studied in 22 animals (Friesland, Jersey and Guernsey cross-breeds), ranging from near full-term foetuses to adults. Various techniques, including angiography and ...
  • Els, H.J.; Pini, A.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Pretoria : The Government Printer, 1977)
    Since the application of negative staining, preceded by fixation, prevents the disruption and distortion of the capsid of the African swine fever virus, improved contrast and evaluation of the appearance and size of virus ...
  • Evans, Aileen A.; Solomon, K.R.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (The Government Printer, Pretoria, 1977)
    The arrangement of the brain and peripheral nerves in Ornithodoros savignyi (Audouin) is similar to that of other argasid and ixodid ticks. Histological studies, using a specialized staining technique (aldehyde fuchsin), ...
  • Anonymous; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Pretoria : The Government Printer, 1977)
  • Prozesky, Leon; Pienaar, J.G.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Pretoria : The Government Printer, 1977)
    Amaurosis occurred in sheep on various farms in the Republic of South Africa after treatment with rafoxanide. Histopathological examination revealed a status spongiosus of varying severity in the central nervous system ...
  • Van Wyk, J.A. (Jan Aucamp); Gerber, H.M.; Van Aardt, W.P.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Pretoria : The Government Printer, 1977)
    Exsheathed infective larvae (L 3) of 19 species of nematodes were tested for infectivity in either sheep or cattle after they had been frozen in 0, 9% NaCI solution, stored for a relatively short time in the gas phase of ...
  • Horak, Ivan Gerard; Louw, J.P.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (The Government Printer, Pretoria, 1977)
    The seasonal incidence of helminth infestation in sheep on newly established irrigated pastures was determined by the slaughter of pairs of tracer lambs exposed for periods of approximately 33 days from October 1968 - July ...
  • Van Wyk, J.A. (Jan Aucamp); De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (The Government Printer, Pretoria, 1977)
    When freshly-collected, exsheathed infective larvae of Oesophagostomum columbianum and Chabertia ovina were frozen in liquid nitrogen and subsequently thawed, conspicuous vesicles appeared in the intestinal cells of the ...
  • Coetzer, Jacobus A.W.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (The Government Printer, Pretoria, 1977)
    A widespread epizootic of Rift Valley fever occurred in the Republic of South Africa and South West Africa during 1974-75. This is a report on the gross pathology of 34 new-born lambs and the histopathology of 93 new-born ...
  • Jansen, B.C.; Knoetze, P.C.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (The Government Printer, Pretoria, 1977)
    Experimental evidence is produced to justify abandoning the practice of subdividing Clostridium botulinum Type C into type Cα and type Cβ.
  • Malherbe, W.D.; Kellerman, T.S.; Kriek, N.P.J.; Haupt, W.H.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Pretoria : The Government Printer, 1977)
    A brief survey of the literature on gamma-glutamyl transpeptidase (ƴ-GT) activity is included in this study. The levels of activity in the serum of normal Merino sheep (13, 6- 32, 4 mI.U./ml) were ascertained as a preliminary ...
  • Bartsch, R.C.; Van Wyk, J.A.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (The Government Printer, Pretoria, 1977)
    Pathological findings in the urinary tract of 40 head of cattle, experimentally or naturally infested with Schistosoma mattheei, are presented. Lesions of the ureter found in 57,5% of the cases consisted of linear granulomata ...
  • Van der Walt, J.G.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (The Government Printer,Pretoria, 1977)
    The suitability of Sephadex LH-20 as a solid support for the partition chromatography of acetic, propionic and butyric acids was investigated by using standard mixtures of 14C-labelled acids. The clear separation that was ...
  • De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Pretoria : The Government Printer, 1977)
  • Carter, P.; Oellermann, R.A.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Government Printer, Pretoria, 1977)
    The optimum conditions for the culture of cells from dissociated spleens were determined. Routinely, 10⁷ cells were seeded per ml of RPMI 1640 medium supplemented with 20% pre-tested foetal calf serum. For the assay of the ...
  • Horak, Ivan Gerard; Butt, M.J.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (The Government Printer, Pretoria, 1977)
    Four blesbok culled in the Rietvlei Nature Reserve, Pretoria, District during May 1972 were found to harbour large burdens of 1st instar Oestrus spp. larvae and from 16-37 3rd instar larvae of Oestrus macdonaldi. They were ...
  • Van der Walt, J. G.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (The Government Printer, Pretoria, 1977)
    Four German Merino wethers were maintained on 1600 g of lucerne hay fed twice daily. A dilute solution of a labelled volatile fatty acid (VFA) marker was infused over a period of 22 h and 6 discrete rumen fluid samples ...