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The epidemiology of gastrointestinal nematode infections and their effects on cattle are reviewed. The 3 most important nematodes which infect cattle in New Zealand are Ostertagia ostertagi, Trichostrongylus axei and Cooperia oncophora. The general principles of parasite control are considered, and ...

Charleston, W. A. G.
Lincoln University, Canterbury, New Zealand
Sustainable control of internal parasites in ruminants: Animal industries workshop., 1997, pp 23-40