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Abstract

The calves grazed a pasture which had been used by bolus-treated animals in the three previous years. Despite an incomplete reduction of faecal egg shedding during the first months of the grazing season, bolus administration prevented parasitic gastro-enteritis in the calves. A weight gain...

Author(s)
Dorny, P.; Berghen, P.; Vercruysse, J.; Frankena, K.
Citation
Veterinary Quarterly, 1986, 8, 3, pp 189-194
Abstract

Ten of 20 heifers aged 9-18 months were each dosed with 2 g albendazole 31, 62 and 93 days after being turned out to graze in spring, the other ten were left untreated, and grazed an adjoining strip of pasture. This treatment prevented parasitic gastroenteritis, and the treated animals had lower...

Author(s)
Dorny, P.; Vercruysse, J.; Berghen, P.; Hilderson, H.; Ommeslaeghe, K. van; Kloosterman, A.
Citation
Vlaams Diergeneeskundig Tijdschrift, 1988, 57, 6, pp 361-373
Abstract

An ELISA was used to detect serum pepsinogen and albumen, gastrin and antibodies against Cooperia, Ostertagia and Dictyocaulus species for diagnosis of parasitism in 7 untreated 5-8 month old calves and 7 calves treated with an oxfendazole pulse-release bolus (OPRB). During the grazing season, no...

Author(s)
Hilderson, H.; Vercruysse, J.; Dorny, P.; Berghen, P.; Kloosterman, A.
Citation
Preventive Veterinary Medicine, 1990, 8, 4, pp 283-290
Abstract

The antigenic differences among the life cycle stages of C. oncophora were studied by SDS-gel electrophoresis and Western blotting. Sodium dodecylsulphate polyacrylamide gel electrophoresis of the different life cycle stage of C. oncophora revealed a complex protein pattern with a decreasing number ...

Author(s)
Graaf, D. C. de; Hilderson, H.; Berghen, P.; Vercruysse, J.
Citation
Research in Veterinary Science, 1992, 53, 3, pp 390-392
Abstract

Cooperia oncophora total adult extracts were examined by Western blotting with sera from C. oncophora- and Ostertagia ostertagi-infected calves to determine species-specific antigens. It was shown that 2 antigens with apparent MWs of 14 200 and 14 900 were only recognized by calves which received a ...

Author(s)
Graaf, D. C. de; Berghen, P.; Hilderson, H.; Cock, H. de; Vercruysse, J.
Citation
International Journal for Parasitology, 1993, 23, 1, pp 141-144
Abstract

Two studies were performed to investigate the efficacy of doramectin in the prevention of infection with Ostertagia ostertagi and Cooperia oncophora in grazing calves. In each study 24 parasite-naive calves were randomly allotted to 2 equal groups and treated with either doramectin at 200 µg/kg or...

Author(s)
Vercruysse, J.; Dorny, P.; Hong, C.; Harris, T. J.; Hammet, N. C.; Smith, D. G.; Weatherley, A. J.
Citation
Veterinary Parasitology, 1993, 49, 1, pp 51-59
Abstract

Two farms had a low prevalence of gastro-intestinal parasites (dominated by Cooperia and Ostertagia), but there was still a difference in faecal egg counts and serum pepsinogen between 23 calves given a fenbendazole bolus at the start of grazing (at 7-8 months of age) and 23 untreated calves.

Author(s)
Berghen, P.; Hilderson, H.; Vercruysse, J.; Claerebout, E.; Dorny, P.
Citation
Veterinary Quarterly, 1994, 16, 3, pp 161-164
Abstract

Development of immunity to Ostertagia ostertagi and Cooperia oncophora and interactions between both species in primed calves were investigated after homologous, heterologous and concurrent challenge infections. Worm counts, faecal egg output, IgG1 and IgG2 antibodies and the presence of globule...

Author(s)
Hilderson, H.; Vercruysse, J.; Claerebout, E.; Graaf, D. C. de; Fransen, J.; Berghen, P.
Citation
Veterinary Parasitology, 1995, 56, 1/3, pp 107-119
Abstract

The efficacy of two strategic treatments with doramectin (sc 200 µg/kg bodyweight) was studied in 20 first-season Holstein crossbred calves. The calves were allocated to two equal groups: Group D was treated with doramectin at turn-out and 8 weeks later and Group C served as control group. Tracers...

Author(s)
Vercruysse, J.; Hilderson, H.; Claerebout, E.; Roelants, B.
Citation
Veterinary Parasitology, 1995, 58, 1/2, pp 27-34
Abstract

A single treatment with doramectin (200 mg/kg s.c.) given at turnout was compared with a proven programme of 2 pour-on treatments with ivermectin (500 mg/kg) given at turnout and 6 weeks later in groups of 15 Holstein cross Friesian calves (10-12 months old). For a short grazing season of 126 days, ...

Author(s)
Vercruysse, J.; Claerebout, E.; Dereu, A.; Lonneux, J. F.
Citation
Veterinary Record, 1996, 139, 22, pp 547-548

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