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Abstract

The development of immunity to Ostertagia ostertagi and Cooperia oncophora and interactions between these species were investigated in experimentally infected calves. Parasitological, serological and histological parameters were used for assessing immune responses. No conclusive evidence of an...

Author(s)
Dorny, P.; Claerebout, E.; Vercruysse, J.; Hilderson, H.; Huntley, J. F.
Citation
Veterinary Parasitology, 1997, 70, 1/3, pp 143-151
Abstract

A study was carried out to evaluate the effect of different infection levels of Ostertagia ostertagi and Cooperia oncophora in a simulated 'first grazing season' on the resistance of calves to an artificial challenge infection. The infection levels were determined by the infection schedules and the ...

Author(s)
Claerebout, E.; Vercruysse, J.; Dorny, P.; Demeulenaere, D.; Dereu, A.
Citation
Veterinary Parasitology, 1998, 75, 2/3, pp 153-167
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

Five groups of 7 Holstein cross bull calves were used to compare the persistent efficacy of doramectin and eprinomectin pour-on formulations against C. oncophora and O. ostertagi. Calves were given either doramectin or eprinomectin at 500 µg/kg body weight on day 0 (groups 1 and 2) or day 7 of the...

Author(s)
Dorny, P.; Demeulenaere, D.; Smets, K.; Claerebout, E.; Vercruysse, J.
Citation
Veterinary Record, 2000, 147, 5, pp 139-140
Abstract

Resistance to anthelmintics is an increasing problem in sheep, goat and cattle industries worldwide. For parasite management on farms reliable methods for the detection of resistance are required and it is important that tests give comparable, reproducible and reliable results in different...

Author(s)
Demeler, J.; Küttler, U.; El-Abdellati, A.; Stafford, K.; Rydzik, A.; Varady, M.; Kenyon, F.; Coles, G.; Höglund, J.; Jackson, F.; Vercruysse, J.; Samson-Himmelstjerna, G. von
Publisher
Elsevier Ltd, Oxford, UK
Citation
Veterinary Parasitology, 2010, 174, 1/2, pp 58-64
Abstract

The main objective of the present study was to evaluate the accuracy of the faecal egg count reduction test (FECRT) to assess the resistance status of ivermectin (IVM)-resistant isolates of the cattle nematodes Ostertagia ostertagi and Cooperia oncophora, using the controlled efficacy test (worm...

Author(s)
Graef, J. de; Sarre, C.; Mills, B. J.; Mahabir, S.; Casaert, S.; Wilde, N. de; Weyenberg, M. van; Geldhof, P.; Marchiondo, A.; Vercruysse, J.; Meeus, P.; Claerebout, E.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Veterinary Parasitology, 2012, 189, 2/4, pp 378-382

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