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Abstract

Two tests to detect anthelmintic resistance in strongylid nematodes of ruminants, horses and pigs are described. They are an in vivo test, the faecal egg count reduction test recommended for use in infected animals, and an in vitro test, the egg hatch test recommended for detection of benzimidazole ...

Author(s)
Coles, G. C.; Bauer, C.; Borgsteede, F. H. M.; Geerts, S.; Klei, T. R.; Taylor, M. A.; Waller, P. J.
Citation
Veterinary Parasitology, 1992, 44, 1/2, pp 35-44
Abstract

Four calves were infected with a susceptible (laboratory) strain of O. ostertagi and 4 with a field strain suspected to be resistant to benzimidazoles. After 25 days 2 calves from each group were treated with 3.5 mg/kg fenbendazole. Egg output fell to zero in all treated calves. Treated calves did...

Author(s)
Borgsteede, F. H. M.; Geerts, S.; Deken, R. de; Kumar, V.; Brandt, J.
Citation
Veterinary Parasitology, 1992, 41, 1-2, pp 85-92
Abstract

A review is presented of the reported cases of anthelmintic resistance (AR) in cattle nematodes. Although the number of reports is increasing, AR in cattle remains a sporadic phenomenon, most probably because of the relatively infrequent use of anthelmintics in cattle compared with sheep, goats and ...

Author(s)
Geerts, S.
Publisher
Directorate-General Information, Communication, Culture and Audiovisual, European Commission, Brussels, Belgium
Citation
Anthelmintic resistance in nematodes of farm animals. A seminar organised for the European Commission, held in Brussels, Belgium, from 8 to 9 November, 1993., 1994, pp 25-30
Abstract

In Denmark anthelmintic resistance (AR) surveys have been carried out in sheep, goats, pigs and horses. Country-wide surveys carried out in 1993 in pigs, sheep and goats have revealed a number of new cases of AR in nematodes of these hosts. AR has so far not been reported in any helminths of ...

Author(s)
Bjørn, H.
Publisher
Directorate-General Information, Communication, Culture and Audiovisual, European Commission, Brussels, Belgium
Citation
Anthelmintic resistance in nematodes of farm animals. A seminar organised for the European Commission, held in Brussels, Belgium, from 8 to 9 November, 1993., 1994, pp 47-52
Abstract

Data are presented concerning animal husbandry, the use of anthelmintics and the state of anthelmintic resistance in The Netherlands. In cattle the total number of first-year grazing animals is around 900 000. About 20% of these animals are vaccinated annually against lungworm disease....

Author(s)
Boersema, J. H.; Borgsteede, F. H. M.
Publisher
Directorate-General Information, Communication, Culture and Audiovisual, European Commission, Brussels, Belgium
Citation
Anthelmintic resistance in nematodes of farm animals. A seminar organised for the European Commission, held in Brussels, Belgium, from 8 to 9 November, 1993., 1994, pp 69-77
Abstract

In Portugal, cattle, sheep, goats, pigs and horses are generally treated once or twice a year (rarely 3 times a year) with anthelmintics. This is due to climatic conditions and the relatively low larval nematode burdens found on pastures. The major anthelmintics are benzimidazoles, but levamisole,...

Author(s)
Caeiro, V. M. P.
Publisher
Directorate-General Information, Communication, Culture and Audiovisual, European Commission, Brussels, Belgium
Citation
Anthelmintic resistance in nematodes of farm animals. A seminar organised for the European Commission, held in Brussels, Belgium, from 8 to 9 November, 1993., 1994, pp 119-122