Browsing 1964 Onderstepoort Journal of Veterinary Research, Volume 31, 1964 by Subject "Sheep -- Diseases"

Browsing 1964 Onderstepoort Journal of Veterinary Research, Volume 31, 1964 by Subject "Sheep -- Diseases"

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  • The epizootiology of nematode parasites of sheep in the Border area 
    Barrow, D.B.; Jansen, B.C. (Pretoria : The Government Printer, 1964)
    Two experiments to determine the seasonal incidence of nematode parasites of sheep are described. These were based on differential egg counts and a comparison between critical slaughter trials and egg counts. Trichostrongylus, ...
  • The epizootiology of nematode parasites of sheep in the coastal area of the Eastern Province 
    Rossiter, L.W.; Jansen, B.C. (Pretoria : The Government Printer, 1964)
    An experiment comparing critical slaughter results with egg count data collected ante mortem is described. Haemonchus contortus was prevalent from December to April; Ostertagia spp. from October to December; Trichostrongylus ...
  • The epizootiology of nematode parasites of sheep in the Karoo 
    Viljoen, J.H.; Jansen, B.C. (Pretoria : The Government Printer, 1964)
    Total and differential worm counts were carried out post mortem on sheep slaughtered at regular intervals at the Grootfontein College of Agriculture, Middelburg, Cape Province. Fourth stage larvae were recovered at every ...