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Abstract

The present study reports on the development of a copro-antigen capture ELISA for detecting Ostertagia ostertagi infections in cattle. The ELISA was based on polyclonal rabbit antibodies, which recognize O. ostertagi excretory/secretory (ES) antigens. ES antigens are released by the metabolic...

Author(s)
Agneessens, J.; Claerebout, E.; Vercruysse, J.
Publisher
Elsevier Science B.V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2001, 97, 3, pp 227-238
Abstract

The persistent efficacies of doramectin and ivermectin injectable against moderate and high infection levels of Ostertagia ostertagi and Cooperia oncophora were evaluated in cattle. Calves were allocated to 6 groups of 6 animals. On Day 0 animals of Groups I1/I2 and D1/D2 were treated with 0.2...

Author(s)
Vercruysse, J.; Dorny, P.; Claerebout, E.; Demeulenaere, D.; Smets, K.; Agneessens, J.
Citation
Veterinary Parasitology, 2000, 89, 1/2, pp 63-69
Abstract

Host tissue penetration, feeding and immune evasion by helminth parasites may be mediated by both mechanical processes and histolytic products released by the parasite. To investigate potential histolytic products released during in vitro maintenance of exsheathed 3rd (L3) and 4th (L4) stage larvae ...

Author(s)
Geldhof, P.; Claerebout, E.; Knox, D. P.; Agneessens, J.; Vercruysse, J.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Parasitology, 2000, 121, 6, pp 639-647
Abstract

The influence of different types of chemoprophylaxis on the resistance of first season grazing calves against natural reinfection with Ostertagia ostertagi and Cooperia oncophora in the second grazing season was investigated. A total of 30 helminth-naive crossbred calves were randomly divided into...

Author(s)
Claerebout, E.; Dorny, P.; Vercruysse, J.; Agneessens, J.; Demeulenaere, D.
Citation
Veterinary Parasitology, 1998, 76, 4, pp 287-303
Abstract

Larval migration inhibition (LMI) activity of abomasal mucus from calves naturally infected with gastrointestinal nematodes was studied in vitro. LMI activity was also assessed in serum from calves during both natural and artificial O. ostertagi infections to monitor the development of acquired...

Author(s)
Claerebout, E.; Agneessens, J.; Shaw, D. J.; Vercruysse, J.
Citation
Research in Veterinary Science, 1999, 66, 3, pp 253-257
Abstract

Over a period of 1 year, from November 1997 to October 1998, the abomasa, blood and faecal samples of 121 dairy cows in Belgium were collected and examined for nematode infections. Nematodes were present in the abomasa of 110 animals. Ostertagia ostertagi was found in all 110, Trichostrongylus was...

Author(s)
Agneessens, J.; Claerebout, E.; Dorny, P.; Borgsteede, F. H. M.; Vercruysse, J.
Citation
Veterinary Parasitology, 2000, 90, 1/2, pp 83-92
Abstract

Two group of calves, 36 Holstein cross-bred bull and 36 heifer calves (aged 6-8 months) were each divided into 6 groups of 6, in Belgium [date not given]. In both main groups, calves in the first control group (C1) and first treated group (T1) received a daily infection of 200 L3 of O. ostertagi...

Author(s)
Vercruysse, J.; Claerebout, E.; Dorny, P.; Demeulenaere, D.; Agneessens, J.; Smets, K.
Citation
Veterinary Record, 1998, 143, 16, pp 443-446
Abstract

The epidemiology of gastrointestinal helminth infections in beef cows and calves on pasture was studied in Belgium during the 1990 and 1992 grazing seasons. Weight gain, faecal egg counts, generic differentiation of infective larvae, serum pepsinogen levels, herbage larval counts and worm burdens...

Author(s)
Agneessens, J.; Dorny, P.; Hollanders, W.; Claerebout, E.; Vercruysse, J.
Citation
Veterinary Parasitology, 1997, 69, 1/2, pp 65-75