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In 2 experiments, groups of calves which had been exposed to different levels and patterns of infection with Ostertagia and Cooperia spp. in a simulated first grazing season (FGS), were followed throughout a natural second grazing season (SGS). Milk yields in the subsequent first lactation period...

Ploeger, H. W.; Kloosterman, A.; Rietveld, F. W.; Hilderson, H.; Berghen, P.; Pieke, E. J.
Veterinary Parasitology, 1996, 65, 1/2, pp 99-115