Browsing 2002 Onderstepoort Journal of Veterinary Research, Volume 69, 2002 by Title

Browsing 2002 Onderstepoort Journal of Veterinary Research, Volume 69, 2002 by Title

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  • Validation of an indirect enzyme-linked immunosorbent assay for the detection of antibody against Brucella abortus in cattle sera using an automated ELISA workstation 
    Paweska, Janusz Tadeusz; Prozesky, Leon; Potts, A.D.; Harris, H.J.; Smith, S.J.; Viljoen, Gerrit Johannes; Dungu, B.; Brett, O.L.; Bubb, M.; 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)
    An automated indirect enzyme-linked immunosorbent assay (I-ELISA) for the serological diagnosis of bovine brucellosis was developed and validated in-house. A total of 4803 cattle sera from South Africa ( n=3 643), Canada ...
  • Virulence of South African isolates of Haemophilus paragallinarum. Part 1: NAD-dependent field isolates 
    Bragg, R.R. (Robert Richard); 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)
    The virulence of four South African field isolates of NAD-dependent Haemophilus paragallinarum, representing the four serovars known to occur in that country, was investigated. During this study an alternative challenge ...
  • Virulence of South African isolates of Haemophilus paragallinarum. Part 2: Naturally occurring NAD-independent field isolates 
    Bragg, R.R. (Robert Richard); 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)
    Naturally occurring NAD-independent variants of Haemophilus paragallinarum, which have been isolates from poultry showing clinical signs of infectious coryza, were used to determine their virulence using a newly developed ...
  • Virulence of South African isolates of Haemophilus paragallinarum. Part 3: Experimentally produced NAD-independent isolate 
    Taole, M.; Albertyn, J.; Van Heerden, E.; Bragg, R.R. (Robert Richard); 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 NAD-dependent isolate 46 (C-3) of Haemophilus paragallinarum, which was previously demonstrated to be of high virulence, was transformed to NAD independence using a plasmid isolated from a naturally occurring NAD-independent ...
  • Water absorption in relation to fermentation in the colon of the ostrich (Struthio camelus) 
    Musara, C.; Chamunorwa, Joseph Panashe; Holtug, K.; Skadhauge, E.; 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)
    The colon is a major site for fermentation and water absorption in the ostrich. Water absorption along the colon was evaluated and its relationship to osmolality, Na+ concentration, short chain fatty acid (SCFA) concentration ...