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VetMed Resource

Veterinary information to support practice, based on evidence and continuing education

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Abstract

Two groups of yearling cattle which had been treated with ivermectin either three and eight, or three, eight and 13 weeks after turn out to trichostrongyle contaminated pasture in their first grazing season were exposed in the following season to natural challenge with helminth parasites. To assess ...

Author(s)
Armour, J.; Bairden, K.; Ryan, W. G.
Citation
Veterinary Record, 1988, 122, 10, pp 223-225
Abstract

In a number of controlled trials in cattle using experimental infections, Netobimin, administered orally at 7.5 mg/kg showed efficacies of 90-96%, 98-100% and 88-97% against adult Ostertagia ostertagi, Dictyocaulus viviparus and Cooperia oncophora, respectively, while larvicidal activity, as...

Author(s)
Duncan, J. L.; Armour, J.; Bairden, K.
Citation
Proceedings of the 14th World Congress on Diseases of Cattle, Dublin, 1986, 1, pp 166-169
Abstract

The efficacy of a programme of strategic early season treatments with an injection of ivermectin in controlling helminth parasitism of grazing calves was studied in two separate trials. The programme of ivermectin injections administered 3 and 8, or 3, 8, and 13 weeks after turnout was assessed...

Author(s)
Ryan, W. G.; Armour, J.; Bairden, K.; Fox, M. T.; Jacobs, D. E.
Citation
Proceedings of the 14th World Congress on Diseases of Cattle, Dublin, 1986, 1, pp 185-190
Abstract

Two studies demonstrated the persistent activity of ivermectin injected subcutaneously into cattle at 200 µg/kg in preventing the establishment of induced infections with Ostertagia ostertagi, Cooperia oncophora and Dictyocaulus viviparus. There were reductions in mean worm count (compared with the ...

Author(s)
Armour, J.; Bairden, K.; Batty, A. F.; Davison, C. C.; Ross, D. B.
Citation
Veterinary Record, 1985, 116, 6, pp 151-153
Abstract

Eight controlled trials were conducted, using 96 cattle of European breeds, to evaluate the efficacy of abamectin against natural and artificially acquired infections by adult and fourth-stage larvae of all the economically important gastrointestinal nematodes and lungworms in Germany and the UK....

Author(s)
Heinze-Mutz, E. M.; Pitt, S. R.; Bairden, K.; Baggott, D. G.; Armour, J.; Barth, D.; Cramer, L. G.
Citation
Veterinary Record, 1993, 132, 2, pp 35-37
Abstract

Administration, 4 weeks apart, of 2 doses of 1000 Dictyocaulus viviparus larvae that had been gamma-irradiated from a cobalt source at 40 Krad provided a high degree of immunity in calves to subsequent challenge with normal larvae (20/kg body-weight). In another experiment, 4 groups of 4 calves...

Author(s)
Bonazzi, E. F.; Grimshaw, W. T. R.; Bairden, K.; Armour, J.; Gettinby, G.
Citation
Veterinary Parasitology, 1983, 12, 3/4, pp 337-350
Abstract

Administration of a morantel tartrate sustained release bolus into the rumen of calves immediately before turnout on to spring pasture in May substantially reduced the level of pasture contamination with infective larvae (principally Ostertagia ostertagi) later in the grazing season. Compared with...

Author(s)
Armour, J.; Bairden, K.; Duncan, J. L.; Jones, R. M.; Bliss, D. H.
Citation
Veterinary Record, 108, 25, pp 532-535
Abstract

A 16-day infection of Dictyocaulus viviparus in 2 groups of calves was treated with levamisole and fenbendazole, respectively. 5 days afterwards the calves were reinfected with 4000 larvae and necropsied 21 days later. Although the lungworm burdens of the 2 groups of calves were reduced by about...

Author(s)
Urquhart, G. M.; Jarrett, W. F. H.; Bairden, K.; Bonazzi, E. F.
Citation
Veterinary Record, 108, 9, pp 180-182

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