Browsing 1992 Onderstepoort Journal of Veterinary Research, Volume 59, 1992 by Title

Browsing 1992 Onderstepoort Journal of Veterinary Research, Volume 59, 1992 by Title

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  • Scanning electron microscopy of the mucosal surface of the forestomachs and abomasa of grey, white and black Karakul lambs 
    Groenewald, Hermanus B.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute., 1992)
    Homozygous grey and white Karakul lambs suffer from a lethal genetic factor causing death after weaning. Previous studies revealed large milk-filled rumens in the grey and white lambs which was attributed to a significant ...
  • Serological differentiation of five bluetongue virus serotypes in indirect ELISA 
    Du Plessis, D.H.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute., 1992)
    The serological reactivity in indirect ELISA of five different bluetongue virus (BTV) serotypes (4, 10, 15, 16 & 20) was compared using polyclonal antisera raised against virus particles and an outer structural protein, ...
  • Subject index 
    Anonymous; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute., 1992)
  • Subsampling of large light trap catches of Culicoides (Diptera: Ceratopogonidae) 
    Van Ark, H.; Meiswinkel, R.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute., 1992)
    Analyses of 2 light trap catches comprising 6 041 and 1 598 Culicoides showed that the reliability of subsampling such catches increased with subsample size, while the subsampling error decreased with an increase in the ...
  • A survey of cattle tick control practices in the eastern Cape Province of South Africa 
    Spickett, Arthur M.; Fivaz, B.H.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute., 1992)
    Current cattle tick control practices and producer attitudes towards tick control in the eastern Cape Province of South Africa are discussed. These were ascertained from answers to a questionnaire survey to which 31,2% of ...
  • A survey of small stock tick control practices in the eastern Cape Province of South Africa 
    Spickett, Arthur M.; Fivaz, B.H.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute., 1992)
    Current small stock tick control practices and producer attitudes towards tick control in the eastern Cape Province of South Africa are discussed. These were ascertained from returns to a questionnaire survey to which 31,2% ...
  • The transovarial transmission of Babesia trautmanni by Rhipicephalus simus to domestic pigs 
    De Waal, D.T.; Potgieter, F.T.; Lopez-Rebollar, Laura M.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute., 1992)
    Rhipicephalus simus was, for the first time, experimentally proven to be a transovarial vector of Babesia trautmanni of domestic pigs. The nymphal and adult progeny of experimentally infected female ticks transmitted the ...