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We investigated the ability of young lambs to develop protective immunity to gastro-intestinal nematode following immunisation with drug-abbreviated infection. Thirty, 3-4 month old lambs were randomly allocated to five groups. Groups 1, 2 and 3 were immunised by three Oxfendazole-abbreviated artificial infections of Trichostrongylus colubriformis and Ostertagia circumcincta. Group 1 received three...
Two groups of 7 month old pastured Romney lambs selectively bred for either low (resistant - R) or high (susceptible - S) faecal worm egg count (FEC) were immunised while on pasture by two Oxfendazole abbreviated (15 days) artificial infections of firstly 40,000 Trichostrongylus colubriformis and 20,000 Ostertagia circumcincta and secondly 60,000 T. colubriformis and 30,000 O. circumcincta larvae...
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