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Abstract

In 2 experiments, groups of calves were exposed to different levels and patterns of infection with Ostertagia spp. and Cooperia spp. The experimental design simulated the stereotypic pattern of herbage infestation, including a normal or a delayed midsummer increase, under conditions of...

Author(s)
Ploeger, H. W.; Kloosterman, A.; Rietveld, F. W.; Berghen, P.; Hilderson, H.; Hollanders, W.
Citation
Veterinary Parasitology, 1994, 55, 4, pp 287-315
Abstract

In 2 experiments, groups of calves were exposed to different levels and patterns of infection with Ostertagia spp. and Cooperia spp. The experimental design simulated the stereotypic pattern of herbage infestation, including a normal or a delayed midsummer increase, under conditions of...

Author(s)
Ploeger, H. W.; Kloosterman, A.; Rietveld, F. W.; Berghen, P.
Citation
Veterinary Parasitology, 1995, 56, 1/3, pp 91-106
Abstract

In two experiments, groups of calves were exposed to different levels and patterns of infection with Ostertagia spp. and Cooperia spp. The experimental design simulated the stereotypic pattern of herbage infestation, including both a normal and a delayed midsummer increase, under conditions of...

Author(s)
Ploeger, H. W.; Kloosterman, A.; Rietveld, F. W.
Citation
Veterinary Parasitology, 1995, 58, 1/2, pp 61-74
Abstract

Characteristics of the humoral immune response of Cooperia oncophora-infected calves to low MW antigens of C. oncophora were studied. Immunoblotting with sera obtained from calves 6 weeks after a single oral infection with 100 000 C. oncophora L3 larvae revealed several corresponding antigenic...

Author(s)
Parmentier, H. K.; Ploeger, H. W.; Nieuwland, M. G. B.; Souren, P. J. E.; Pinxteren, L. A. H. van; Rietveld, F. W.; De Vries Reilingh, G.; Kloosterman, A.
Citation
Veterinary Parasitology, 1995, 59, 3/4, pp 219-230
Abstract

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...

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

The recognition of low molecular weight proteins by sera obtained during a single oral (primary) infection with 100 000 third-stage larvae of Cooperia oncophora was studied in calves. Three groups of 6 or 7 calves were selected, based on different egg excretion patterns. SDS-gel electrophoresis of...

Author(s)
Diemen, P. M. van; Ploeger, H. W.; Nieuwland, M. G. B.; Rietveld, F. W.; Eysker, M.; Kooyman, F. N. J.; Kloosterman, A.; Parmentier, H. K.
Citation
International Journal for Parasitology, 1997, 27, 5, pp 587-593