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Predicted worm burdens (a), sampled daily faecal egg counts (FEC) (b) and daily faecal egg outputs (c) produced over time in calves administered one of 3 different infection doses of Ostertagia ostertagi L3 larvae: 3500, 7000 and 14,000 L3/day over a 200 day period. The FEC were subject to a random sampling error owing to external factors.
