The cumulative total helminth parasite burdens of ranch calves during their first seven months of life
on the North-eastern Mountain Grassland of South Africa were determined during two consecutive
Trichostrongylus axei was the most abundant nematode parasite followed by Cooperia spp. and Ostertagia
ostertagi. Haemonchus spp. occurred in relatively low numbers and its development was significantly
inhibited. The total helminth parasite burdens of the calves ranged from 681 to 7269 with a
mean of 4405.
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