Browsing 1967 Onderstepoort Journal of Veterinary Research, Volume 34, 1967 by Author "Jansen, B.C."

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Browsing 1967 Onderstepoort Journal of Veterinary Research, Volume 34, 1967 by Author "Jansen, B.C."

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  • The duration of immunity to pulpy kidney disease of sheep 
    Jansen, B.C.; Jansen, B.C. (Pretoria : The Government Printer, 1967)
    It was shown that the immunity induced by a primary and secondary dose of antigen varying from 25 to 135 Lf APT, protected sheep for only about nine weeks. Any booster dose given before a year after the primary injection ...
  • The production of a basic immunity against pulpy kidney disease 
    Jansen, B.C.; Jansen, B.C. (Pretoria : The Government Printer, 1967)
    A single dose of alum-precipitated epsilon toxoid (APT) produces only a transitory immunity when given to fully susceptible sheep. A maximal immunity response is brought about by two injections each containing 90 Lf toxoid. ...