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VetMed Resource

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Abstract

In North Zealand, Denmark, 24 calves were divided into 4 equal groups: group 1, turned out onto permanent pasture (plot A) from mid-May until late September (trial termination); group 2, turned out in mid-May on plot A and transferred to safe pasture in July; group 3, turned out in mid-June on...

Author(s)
Nansen, P.; Jørgensen, R. J.; Henriksen, S. A.; Foldager, J.
Citation
Veterinary Parasitology, 1987, 24, 1-2, pp 139-147
Abstract

The effect of stocking rate on the acquisition of O. ostertagi infection and performance of yearling calves of a marshland area in the southwest of Jutland, Denmark, was examined. During the early part of the grazing season, when grass growth was high and pasture infectivity low, there was little...

Author(s)
Nansen, P.; Foldager, J.; Hansen, J. W.; Henriksen, S. A.; Jørgensen, R. J.
Citation
Veterinary Parasitology, 1988, 27, 3-4, pp 325-335
Abstract

Artificially prepared cow pats containing O. ostertagi eggs were deposited on 2 pasture plots near Copenhagen, Denmark, in May, June and July 1986. Half of the cow pats, placed on one plot, were inoculated with 2000 conidia/g faeces of A. oligospora. On the other plot fungus-free control cow pats...

Author(s)
Grønvold, J.; Nansen, P.; Henriksen, S. A.; Thylin, J.; Wolstrup, J.
Citation
Journal of Helminthology, 1988, 62, 4, pp 271-280
Abstract

Clinical outbreaks of trichostrongylosis occurring in June and early July in first-season grazing calves in Denmark during the period 1972-1987 are described. 2 severe outbreaks in 1976 on separate research farms, were studied in detail. Herbage infectivity was particularly high in grass tufts...

Author(s)
Nansen, P.; Grønvold, J.; Jørgensen, R. J.; Henriksen, S. A.; Foldager, J.; Sejrsen, K.
Citation
Veterinary Parasitology, 1989, 32, 2-3, pp 199-211
Abstract

Artificially prepared cow pats containing O. ostertagi eggs were deposited on 2 comparable grazing plots in Denmark at weekly intervals during June and July 1987. Before deposition the cow pats, on the one plot, were inoculated with 0.250 g mycelial fragments/kg of faeces of A. oligospora. On the...

Author(s)
Grønvold, J.; Henriksen, S. A.; Nansen, P.; Wolstrup, J.; Thylin, J.
Citation
Journal of Helminthology, 1989, 63, 2, pp 115-126
Abstract

This study on natural trichostrongylosis (Ostertagia ostertagi and Cooperia oncophora) in calves on permanent pasture in Denmark, was designed to evaluate whether susceptible first-season calves would benefit from mixed grazing with 2nd season calves that were more resistant. The experimental plan...

Author(s)
Nansen, P.; Steffan, P.; Monrad, J.; Grønvold, J.; Henriksen, S. A.
Citation
Veterinary Parasitology, 1990, 36, 3-4, pp 265-276
Abstract

Eggs from freshly voided segments of Taenia saginata were placed in small bags, exposed on the surface of soil, sampled at 3-month intervals and given orally, in suspension, to young calves that were serologically negative for Cysticercus bovis. The number of cysts that developed were counted and...

Author(s)
Ilsøe, B.; Kyvsgaard, N.; Nansen, P.; Henriksen, S. A.
Citation
Acta Veterinaria Scandinavica, 1990, 31, 2, pp 153-158
Abstract

An experiment was designed to test the survival and performance of stress selected nematophagous fungi after passage through the gastro-intestinal tract of Danish cattle. Ruminating calves were fed daily with a fixed amount of fungal material grown on barley grains. The excreted dung was collected...

Author(s)
Larsen, M.; Wolstrup, J.; Henriksen, S. A.; Grønvold, J.; Nansen, P.
Citation
Journal of Helminthology, 1992, 66, 2, pp 137-141

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