Browsing 1993 Onderstepoort Journal of Veterinary Research, Volume 60, 1993 by Author "Bragg, R.R. (Robert Richard)"

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Browsing 1993 Onderstepoort Journal of Veterinary Research, Volume 60, 1993 by Author "Bragg, R.R. (Robert Richard)"

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  • Monoclonal antibody characterization of South African field isolates of Haemophilus paragallinarum 
    Verschoor, J.A. (Jan Adrianus), 1953-; Bragg, R.R. (Robert Richard); Coetzee, L.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1993)
    A total of 27 different isolates of Haemophilus paragallinarum were made from chickens between June 1991 and December 1992. All of these isolates were examined by ELISA, by means of a locally produced panel of three ...
  • Plasmid-encoded NAD independence in some South African isolates of Haemophilus paragallinarum 
    Verschoor, J.A. (Jan Adrianus), 1953-; Bragg, R.R. (Robert Richard); Coetzee, L.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1993)
    Atypical Haemophilus paragallinarum have been isolated from both laying hens and broilers suffering from typical symptoms of infectious coryza in South Africa. Re-inoculation of these bacteria into SPF chickens resulted ...
  • The use of the GENETRAK Escherichia coli probe kit for the detection of three atypical E. coli isolates 
    Davis, A.J.; Bragg, R.R. (Robert Richard); Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1993)
    A commercially available E. coli probe kit was used to test 1 lactose negative E. coli isolate and 2 hydrogen sulphide-producing E. coli isolates. The isolates were confirmed as E. coli by means of the API system. The ...