Parasites of domestic and wild animals in South Africa .XI. Helminths in cattle on natural pastures in the Northern Transvaal
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Date
Authors
Horak, Ivan Gerard
Journal Title
Journal ISSN
Volume Title
Publisher
The Government Printer, Pretoria
Abstract
After being exposed to infestation for 4 or 6 weeks, pairs of tracer calves were slaughtered to determine the seasonal incidence of helminth infestation in cattle on natural pasture. \
Haemonchus placei was recovered from March-July and from November-February, and peak burdens were recorded during December and January. There was marked inhibition in larval development from April-July.
Trichostrongylus spp. were recovered from March-June and from November-February, the greatest number of worms being recorded during December.
Cooperia spp. infestation occurred from March- August and November-February with peak burdens during April-June and December. From February-August more than 50% of the worms recovered were in the 4th larval stage of development.
The greatest number of Oesophagostomum radiatum were recovered from June-January. Longistrongylus sabie and lmpalaia tuberculata, parasites normally found in impala, were recovered from many of the survey animals, this being the first record of their occurrence in cattle.
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Keywords
Veterinary Medicine
Sustainable Development Goals
Citation
Horak, IG 1978, 'Parasites of domestic and wild animals in South Africa. XI. Helminths in cattle on natural pastures in the northern Transvaal’, Onderstepoort Journal of Veterinary Research, vol. 45, no. 4, pp. 229-234.