Browsing South African National Veterinary Repository by Type "Article"

Browsing South African National Veterinary Repository by Type "Article"

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  • The 1944 epizootic of horsesickness in the Middle East 
    Alexander, R.A.; Du Toit, P.J. (Pretoria : The Government Printer, 1948)
    (1) The history of horsesickness in Egypt and Palestine is traced. (2) It is believed that the 1944 epizootic was started in Egypt by the introduction of one or more infected equines into the Komombo area from the South ...
  • The 2024 Presidents award 
    South African Veterinary Association. Veterinary History Society (Article originally published in VetNews,August 2024, the monthly magazine of the South African Veterinary Association, 2024-08)
    The 2024 Presidents award was awarded to Professor Gareth Bath for his extensive and honourable contribution to livestock production by the South African Society for Animal Science at their 54th Annual congress held in ...
  • The 3A non-structural-protein coding region of the southern African SAT type isolates differs from that of other foot-and-mouth disease viruses 
    Vosloo, Wilna; Nel, Louis Hendrik; Heath, Livio Edward; Van Rensburg, H.G. (Hester Gertruida); Boomker, Jacob Diederik Frederik (Published jointly by the Agricultural Research Council, ARC-Onderstepoort Veterinary Institute and the Faculty of Veterinary Science, University of Pretoria., 2001)
    The 3A non-structural protein of foot-and-mouth disease viruses is a relatively conserved protein comprising 153 amino acids. Recent studies have demonstrated correlation between mutations in the 3A non-structural-protein-coding ...
  • The ability of group III viruses associated with infertility in cattle in South Africa to infect the respiratory tract 
    Mare, C.J.; Jansen, B.C. (Pretoria : The Government Printer, 1964)
    The pathogenicity to the respiratory tract of seven virus isolates associated with genital disease in cattle was investigated. It was shown that (1) the febrile response was very similar to that encountered after intra-nasal ...
  • The absence of clinical disease in cattle in communal grazing areas where farmers are changing from an intensive dipping programme to one of endemic stability to tick-borne diseases 
    Tice, G.A.; Bryson, N.R.; Stewart, C.G.; Du Plessis, B.; De Waal, D.T.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    A two-year field study was conducted in four communal grazing areas in South Africa. Sera were collected from young cattle (6-18 months old) in these areas during the winters of 1991 to 1993. The sera were tested for ...
  • The absorptivity for solar radiation of different coloured hairy coats of cattle 
    Riemerschmid, G.; Elder, J.S.; Du Toit, P.J. (Published by The Government Printer, Pretoria, 1945)
    1. The mean effective absorptivity for solar radiation of the hairy coats of cattle was determined. It was found that the colour of the hair is the most important characteristic in effecting the total percentage of ...
  • Acaricide resistance profiles of single- and multi-host ticks from communal and commercial farming areas in the Eastern Cape and North-West Provinces of South Africa 
    Horak, Ivan Gerard; Mekonnen, Sileshi; Bryson, N.R.; Fourie, L.J.; Peter, R.J.; Spickett, Arthur M.; Taylor, Robin J.; Strydom, T.; Boomker, Jacob Diederik Frederik (Published jointly by the Agricultural Research Council, ARC-Onderstepoort Veterinary Institute and the Faculty of Veterinary Science, University of Pretoria., 2002)
    A field study (February 2000 to August 2001) was conducted on communal and commercial farms in the Eastern Cape and North-West Provinces of South Africa to detect the levels of tick resistance to commonly used acaricides. ...
  • Acceptance of candidate baits by domestic dogs for delivery of oral rabies vaccines 
    Linhart, S.B.; Baer, G.M.; Balderas Torres, J.M.; Engeman, R.M.; Collins, E.F.; Meslin, F.X.; Schumacher, C.L.; El-Taweel, A.H.; Wlodkowski, J.C.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1997)
    Protocols for evaluating oral rabies vaccine baits for domestic dogs were field tested in central Mexico, after which dog-food manufacturers and suppliers to the pet-food industry were advised as to potential ingredients ...
  • An accurate, sensitive and reproducible method for colorimetric estimation of free fatty acids in plasma 
    De Villiers, Saramarie; Van der Walt, J.G.; Procos, 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. (Pretoria : The Government Printer, 1977)
    A sensitive and reproducible method permitting the estimation of 0,030-3,000 mM of free fatty acids (FFA) in plasma with a standard error of 0,006 5 was developed. The method is based on the extraction of phosphate-buffered ...
  • Acid production by flavivirus-infected Vero and Cer cell cultures 
    Barnard, B.J.H.; Bigalke, R.D. (Published by The Government Printer, Pretoria, 1984)
    VERO and CER cell cultures infected with flaviviruses produce more acid than non-infected control cultures. Acid production is dependent on the presence of glucose. This phenomenon can be utilized for the titration of ...
  • The acquisition of immunity to Histophilus ovis by sheep in nature 
    Jansen, B.C.; Hayes, Marianna; Bigalke, R.D. (Pretoria : Government Printer, 1984)
    It was demonstrated that skin wound infection with Histophilus ovis elicits an immune response which can protect a ram against a challenge injection of the same organism into its epididymis.
  • Acquisition of protective immunity in Geochelone pardalis against Amblyomma marmoreum (Acari: Ixodidae) nymphal ticks 
    Tembo, S.D.; Kiwanuka, A.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1997)
    Significant increases in serum globulins (α₁ , α₂ , β and γ) were observed in mountain leopard tortoises (Geochelone pardalis) after they had been immunized with nymphal homogenates of Amblyomma marmoreum. There was a ...
  • Actinobacillus seminis infection in sheep in the Republic of South Africa. I. Identification of the problem 
    Van Tonder, E.M.; Steyn, P.J.J.; Bigalke, R.D.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B.; Cameron, Colin McKenzie; Gilchrist, Frances M.C. (Published by The Government Printer, Pretoria, 1979)
    A clinical palpation and semen smear examination of 647 rams submitted to the Regional Veterinary Laboratory during 1967 revealed that 42 (6,5%) of these animals had clinical epididymitis or orchitis, 6 (0,9%) showed other ...
  • Actinobacillus seminis infection in sheep in the Republic of South Africa. II. Incidence and geographical distribution 
    Van Tonder, E.M.; Steyn, P.J.J.; Bigalke, R.D.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B.; Cameron, Colin McKenzie; Gilchrist, Frances M.C. (Published by The Government Printer, Pretoria, 1979)
    To obtain information on the incidence and distribution of Actinobacillus seminis infection in the Republic of South Africa, a clinical and serological survey was carried out on 409 farms situated in 29 districts. All rams ...
  • Actinobacillus seminis infection in sheep in the Republic of South Africa. III. Growth and cultural characteristics of A. seminis 
    Van Tonder, E.M.; Steyn, P.J.J.; Bigalke, R.D.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B.; Cameron, Colin McKenzie; Gilchrist, Frances M.C. (Published by The Government Printer, Pretoria, 1979)
    Bacteriological tests were done on a large number of different strains of Actinobacillus seminis and also, repeatedly, on the same culture or on different cultures taken periodically from the same donor animal. These tests ...
  • The activity of insect juvenile hormone mimics in larval Amblyomma hebraeum Koch (Acarina : Metastriata : Ixodidae) 
    Solomon, K.R.; Evans, Aileen 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, 1978)
    A total of 14 insect juvenile hormone mimics was tested for activity in Amblyomma hebraeum by exposing newly engorged larvae to filter paper impregnated with hormone mimics. The most active compounds used in this assay ...
  • Addition of rabbit serum to EMJH medium improves isolation of Leptospira interrogans serovar hardjo 
    Te Brugge, Lesley A.; Louw, H.N.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1985)
    The addition of 2 % pooled rabbit serum to semi-solid commercial EMJH medium with EMJH enrichment and 0,5 mg of 5-fluorouracil per ml was found to enhance the growth rate and success of isolation of Leptospira interrogans ...
  • The administration of anthelminthics to horses in bran 
    Monnig, H.O.; Marais, I.P.; Union of South Africa. Dept. of Agriculture; Du Toit, P.J. (Union of South Africa : Dept. of Agriculture, 1933)
    The method described by Roger, Jouveaux and Plateau of administering anthelminthics in bran to horses, was found to be quite ineffective against strongyles and ascarids while the administration of Carbon bisulphide by ...
  • Adult Amblyomma hebraeum burdens and heartwater endemic stability in cattle 
    Du Plessis, J.L.; Loock, P.J.; Ludemann, C.J.F.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute., 1992)
    Several conclusions of importance to studies on the epidemiology of heartwater were drawn from an investigation in which the numbers of adult Amblyomma hebraeum ticks, to which a closed herd of Hereford cattle were exposed ...
  • Adult ixodid ticks on two cattle breeds in the south-western Free State, and their seasonal dynamics 
    Fourie, L.J.; Kok, D.J.; Heyne, Heloise; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1996)
    A study was conducted to compare the species of adult ixodid ticks on Friesian and Bonsmara cattle and their seasonal dynamics. Between five and ten animals of each breed were kept on natural False Upper Karoo vegetation, ...