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Abstract

Groups of calves (total 22) were infected experimentally with Dictyocaulus viviparus larvae at different times during summer grazing (May-October) on separate plots. Those each given 60 larvae soon after the start of grazing developed immunity after infection with the second generation of...

Author(s)
Eysker, M.; Boersema, J. H.; Cornelissen, J. B. W. J.; Kooyman, F. N. J.; Leeuw, W. A. de; Saatkamp, H. W.
Citation
Veterinary Quarterly, 1994, 16, 3, pp 144-147
Abstract

Rotation of grazing once a week during the grazing season prevented the occurrence of severe lungworm infections and permitted the development of immunity to Dictyocaulus viviparus, but it failed to protect calves from gastrointestinal helminths; calves which grazed for only 4 days in August or...

Author(s)
Eysker, M.; Boersma, J. H.; Cornelissen, J. B. W. J.; Kooyman, F. N. J.; Leeuw, W. A. de; Saatkamp, H. W.
Citation
Veterinary Quarterly, 1993, 15, 1, pp 20-24
Abstract

Ten calves were given a levamisole bolus upon turning out to graze on a pasture deliberately contaminated with Dictyocaulus viviparus larvae, while another ten were treated with ivermectin after 21, 56 and 91 days of grazing the same pasture. Both procedures prevented parasitic bronchitis,...

Author(s)
Borgsteede, F. H. M.; Burg, W. P. J. v. d.; Leeuw, W. A. de; Cornelissen, J. B. W. J.; Dijk, J. E. van
Citation
Veterinary Quarterly, 1990, 12, 2, pp 65-72
Abstract

An ELISA that detects antibodies against Dictyocaulus viviparus in experimentally- and naturally-infected cattle was evaluated for its sensitivity, specificity, the moment of seroconversion and persistence of the anti-D. viviparus response and precision. The first 3 parameters were compared with...

Author(s)
Cornelissen, J. B. W. J.; Borgsteede, F. H. M.; Milligen, F. J. van
Citation
Veterinary Parasitology, 1997, 70, 1/3, pp 153-164
Abstract

The effect of 3 intraruminal sustained-release devices (SRD) against Dictyocaulus viviparus infection was tested in 5 groups of 6 calves. Group 1 served as untreated controls, and groups 2, 3 and 4 were dosed with a levamisole SRD (Chronomintic bolus), a fenbendazole SRD (Panacur SR bolus), and an...

Author(s)
Borgsteede, F. H. M.; Linden, J. N. van der; Cornelissen, J. B. W. J.; Gaasenbeek, C. P. H.; Ascher, F.
Citation
Veterinary Record, 1998, 142, 25, pp 696-699
Abstract

Three ELISAs that detect antibodies against Dictyocaulus viviparus in cattle were compared for sensitivity, specificity and seroconversion after primary infection. These assays were: an indirect ELISA with crude somatic antigens from adult D. viviparus (ca-ELISA); an indirect ELISA with purified...

Author(s)
Leeuw, W. A. de; Cornelissen, J. B. W. J.
Citation
Veterinary Parasitology, 1993, 49, 2/4, pp 229-241
Abstract

Two grazing experiments were performed to study the effect of moxidectin in a `dose and move' system on Dictyocaulus viviparus infections in calves. In the first experiment, 3 groups of 4 calves were experimentally infected with 20 larvae of D. viviparus 7 weeks before moxidectin treatment of 2 of...

Author(s)
Eysker, M.; Boersema, J. H.; Cornelissen, J. B. W. J.; Kooyman, F. N. J.
Citation
Veterinary Parasitology, 1995, 58, 1/2, pp 49-60
Abstract

Abomasa, blood samples and faecal samples for examination of nematode infections were collected from 125 dairy cows between November 1997 and October 1998. Of these, 12 had no grazing history and were therefore excluded from the study. Of the remaining 113, 88.5% had nematode eggs in their faeces....

Author(s)
Borgsteede, F. H. M.; Tibben, J.; Cornelissen, J. B. W. J.; Agneessens, J.; Gaasenbeek, C. P. H.
Citation
Veterinary Parasitology, 2000, 89, 4, pp 287-296
Abstract

Somatic, excretion and secretion antigens of adult D. viviparus and somatic antigens of L3 larvae were examined in an indirect ELISA to determine whether they cross-reacted with sera collected from calves with mono-infections of Fasciola hepatica, Ostertagia ostertagi, Ascaris suum or Cooperia...

Author(s)
Leeuw, W. A. de; Cornelissen, J. B. W. J.
Citation
Veterinary Parasitology, 1991, 39, 1-2, pp 137-147
Abstract

A study was made of the possibility of reducing lungworm infections in young grazing calves by rotational grazing for weekly periods on 6 paddocks in the Netherlands. For this purpose 3 groups of 4 calves each were grazed on separate pastures in 1989, whereas a 4th group served as a permanently...

Author(s)
Eysker, M.; Boersema, J. H.; Cornelissen, J. B. W. J.; Kooyman, F. N. J.; Leeuw, W. A. de
Citation
Veterinary Parasitology, 1992, 41, 1-2, pp 127-135

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