Browsing 2002 Onderstepoort Journal of Veterinary Research, Volume 69, 2002 by Subject "Haemophilus -- South Africa"

Browsing 2002 Onderstepoort Journal of Veterinary Research, Volume 69, 2002 by Subject "Haemophilus -- South Africa"

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  • 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 ...