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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

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

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
Abstract

A study was undertaken in Denmark to investigate whether experimental, mixed trichostrongyle infections of stabled calves prior to their first grazing season could confer sufficient immunity to significantly reduce egg excretion after turnout, and thereby prevent loss-producing infections later on. ...

Author(s)
Nansen, P.; Stefan, P. E.; Christensen, C. M.; Gasbarre, L. C.; Monrad, J.; Grønvold, J.; Henriksen, S. A.
Citation
International Journal for Parasitology, 1993, 23, 5, pp 627-638
Abstract

An attempt was made to control Ostertagia ostertagi by feeding the nematode trapping fungus Duddingtonia flagrans (DSM 6703) to grazing calves. One group of calves (group E) was fed the fungal material in the first 2 months of the grazing season while another group was a non-treated control group...

Author(s)
Wolstrup, J.; Grønvold, J.; Henriksen, S. A.; Nansen, P.; Larsen, M.; Bøgh, H. O.; Ilsøe, B.
Citation
Journal of Helminthology, 1994, 68, 2, pp 175-180
Abstract

A study was conducted in the 1993 grazing season in Denmark with yearling calves exposed to a pasture with a natural mixed trichostrongyle larval infection. It was shown that daily feeding with the microfungus Duddingtonia flagrans during the first 2 months of the season led to a lowered herbage...

Author(s)
Larsen, M.; Nansen, P.; Wolstrup, J.; Grønvold, J.; Henriksen, S. A.; Zorn, A.
Citation
Veterinary Parasitology, 1995, 60, 3/4, pp 321-330
Abstract

Strategic feeding of first-season Friesian heifer calves, each inoculated with 5000 infective larvae of Ostertagia ostertagi, with the microfungus Duddingtonia flagrans (DSM 6703) grown on barley grain at the rate of 200 g dry weight/animal/day, with ∼106 chlamydospores/g, throughout the first 3...

Author(s)
Nansen, P.; Larsen, M.; Grønvold, J.; Wolstrup, J.; Zorn, A.; Henriksen, S. A.
Citation
Parasitology Research, 1995, 81, 5, pp 371-374

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