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Abstract

A field experiment was carried out in Pennsylvania, USA, to evaluate the use of an experimental albendazole pulse release bolus (E-bolus) on gastrointestinal parasitism in calves. The bolus was administered at turnout to 9 first-season grazing calves and 9 animals were kept as controls on a...

Author(s)
Dorny, P.; Vercruysse, J.; Hilderson, H.; Berghen, P.; Ommeslaeghe, K. van; Kloosterman, A.
Citation
Veterinary Research Communications, 1988, 12, 4-5, pp 335-342
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

Levamisole was applied to 13 cattle aged 8-12 months as a pour-on formulation, 3, 6, and 9 weeks after the start of grazing at 10 mg/kg body weight. Another 13 were injected s.c. with ivermectin at 0.2 mg/kg 3 and 8 weeks after the start of grazing. Faecal output of nematode eggs was much lower in...

Author(s)
Vercruysse, J.; Hilderson, H.; Dorny, P.; Berghen, P.
Citation
Veterinary Quarterly, 1988, 10, 4, pp 225-229
Abstract

A second trial of the oxfendazole pulse-release bolus confirmed the good results against ostertagiasis of types I and II obtained previously in Belgium (Vercruysse et al. 1987). This was applied when the animals were turned out to graze in spring. Another "front-loaded" type of bolus, applied in...

Author(s)
Berghen, P.; Hilderson, H.; Vercruysse, J.; Dorny, P.; Kloosterman, A.
Citation
Vlaams Diergeneeskundig Tijdschrift, 1989, 58, 1, pp 14-19
Abstract

A 3-year analysis of 1653 individual records of plasma pepsinogen concentrations of 190 first season grazing calves in Belgium showed that only 196 records of 61 animals showed pepsinogen values above 3600 mU tyrosine and that only 26% of these were accompanied by visible clinical signs of...

Author(s)
Hilderson, H.; Berghen, P.; Vercruysse, J.; Dorny, P.; Braem, L.
Citation
Veterinary Record, 1989, 125, 14, pp 376-377
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

Two outbreaks of parasitic gastroenteritis were observed in a group of 10 first-season grazing calves, one in mid-July and one in mid-September. In both cases emergency anthelmintic treatment was needed to prevent further damage. Severe clinical signs were observed together with high faecal egg...

Author(s)
Berghen, P.; Dorny, P.; Hilderson, H.; Vercruysse, J.; Hollanders, W.
Citation
Veterinary Record, 1990, 127, 17, pp 426-430
Abstract

Daily changes in serum gastrin and pepsinogen concentration were studied during 2 types of infection with O. ostertagi in calves. In a first experiment 2 calves were trickle infected (10 times 10 000 L3 Ostertagia) and 2 animals received a single infection of 100 000 L3 Ostertagia. Gastrin and...

Author(s)
Hilderson, H.; Dorny, P.; Berghen, P.; Vercruysse, J.; Fransen, J.; Braem, L.
Citation
Journal of Veterinary Medicine. Series B, 1991, 38, 1, pp 25-32
Abstract

Thirty parasite-naive Holstein-cross heifers aged 7 to 12 months were allocated into 3 groups and were treated with either an oxfendazole pulse release bolus (Repidose) administered orally at turnout or ivermectin (Ivomec) injected s.c. at 200 µg/kg at 3, 8 and 13 weeks after turnout or untreated...

Author(s)
Hollanders, W.; Berghen, P.; Dorny, P.; Hilderson, H.; Vercruysse, J.; Ryan, W. G.
Citation
Veterinary Record, 1992, 130, 16, pp 355-356
Abstract

Gastrin values were evaluated in 130 parasite-free calves, in 61 first season grazing calves during 6 field trials and in 8 experimentally infected adult immune cows. The gastrin values were linked to pepsinogen levels and daily weight gain. Also the influence of thiabendazole treatment on...

Author(s)
Hilderson, H.; Vercruysse, J.; Berghen, P.; Dorny, P.; McKellar, Q. A.
Citation
Journal of Veterinary Medicine. Series B, 1992, 39, 3, pp 187-192

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