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Abstract

Anthelmintic efficacy of moxidectin, an experimental antiparasitic macrocyclic lactone, was evaluated in a group of 15 calves harbouring naturally acquired gastrointestinal nematodes. Three groups of 5 calves each served as untreated controls (group 1) or principals that were given moxidectin per...

Author(s)
Zimmerman, G. L.; Hoberg, E. P.; Pankavich, J. A.
Citation
American Journal of Veterinary Research, 1992, 53, 8, pp 1409-1410
Abstract

Twelve calves (mean weight, 175.5 kg) were used to confirm efficacy of ivermectin delivered from a prototype sustained-release bolus against naturally acquired (gas-inhibited) larvae of Ostertagia ostertagi. The calves were allocated by restricted randomization on weight to 1 of 2 groups: controls, ...

Author(s)
Zimmerman, G. L.; Mulrooney, D. M.; Wallace, D. H.
Citation
American Journal of Veterinary Research, 1991, 52, 1, pp 62-63
Abstract

In April 1985, 30 yearling beef stocker calves in Oregon, USA, were each given a morantel sustained release trilaminate matrix (MSRT) designed to release morantel tartrate continuously for 90 days. A 2nd group of 30 calves served as untreated controls. The animals were weighed and faecal samples...

Author(s)
Rickard, L. G.; Zimmerman, G. L.; Hoberg, E. P.; Lockwood, P. W.; Weber, D. W.; Miller, R.
Citation
Veterinary Parasitology, 1989, 33, 2, pp 125-133
Abstract

Controlled release anthelmintic boluses including pulse-release boluses such as Autoworm (oxfendazole) and E-bolus (albendazole), and sustained release devices such as Paratect (morantel) and ivermectin boluses are described. Problems, such as the development of drug resistance, are briefly...

Author(s)
Zimmerman, G. L.; Hoberg, E. P.
Citation
Parasitology Today, 1988, 4, 2, pp 55-56
Abstract

Clorsulon (3.5 or 7 mg/kg of body weight) was given orally to mature cows (dairy or beef) and to mature mixed-breed sheep harbouring patent infections of F. hepatica. 18 animals of each species were assigned to a control group (drug vehicle) or to 1 of 2 treatment (3.5 or 7.0 mg/kg) groups of 6...

Author(s)
Zimmerman, G. L.; Wallace, D. H.; Schons, D. J.; Hoberg, E. P.
Citation
American Journal of Veterinary Research, 1986, 47, 8, pp 1665-1667
Abstract

The efficacy of netobimin in removing naturally acquired gastrointestinal nematode infections was evaluated in 10 treated and 10 untreated yearling beef heifers. The anthelmintic was administered as an oral drench at a dose level of 7.5 mg/kg bwt. Faecal egg counts were reduced with netobimin by...

Author(s)
Richards, L. S.; Zimmerman, G. L.; Weber, D. W.; Dawley, S. W.; Nelson, M. J.; Schons, D. J.
Citation
Veterinary Parasitology, 1987, 26, 1-2, pp 79-85
Abstract

The effect of ivermectin delivered from a sustained-release bolus (I-SRB) on the weight gain of beef cattle through a grazing season was evaluated using 20 yearling beef steer calves randomly divided into 2 groups of 10 animals each. Calves in the control group each received a placebo bolus while...

Author(s)
Rickard, L. G.; Zimmerman, G. L.; Hoberg, E. P.; Wallace, D. H.
Citation
Veterinary Parasitology, 1991, 39, 3-4, pp 267-277
Abstract

The reproductive performance of beef cows and the weight gain of their calves on a ranch at Langlois, southern Oregon coast, USA, was evaluated after oral administration of clorsulon or clorsulon in combination with the subcutaneous administration of ivermectin. 150 pregnant cows harbouring...

Author(s)
Rickard, L. G.; Zimmerman, G. L.; Hoberg, E. P.; Bishop, J. K.; Pettitt, R. J.
Citation
Veterinary Parasitology, 1992, 41, 1-2, pp 45-55
Abstract

The efficacy of febantel (5.0 mg/kg) against naturally acquired infections of gastrointestinal nematodes was evaluated in calves during the winter in Oregon, USA. 20 steers were allotted to either control or treatment groups of 10 animals each. 7 days after treatment, the calves were killed and...

Author(s)
Hoberg, E. P.; Zimmerman, G. L.; Rickard, L. G.; Schons, D. J.
Citation
American Journal of Veterinary Research, 1988, 49, 9, pp 1540-1542
Abstract

In western Oregon, USA, 38 calves (in 1982) and 40 calves (in 1983) were randomly assigned to control or treatment groups which were given morantel sustained release bolus on the day of turnout onto pasture. Mean worm burdens from tracer calves grazed with treated animals in 1982 and 1983 showed...

Author(s)
Syhre, D. R.; Zimmerman, G. L.; Newby, T. J.; Wilkins, C. P.; Clark, C. R. B.; Cerro, J. E.; Hoffman, C. C.; Swanson, L. V.
Citation
Veterinary Parasitology, 1987, 23, 3-4, pp 223-235

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