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