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VetMed Resource

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

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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

Specimens of O. leptospicularis were recovered from abomasa of 17 of 23 naturally infected calves in Oregon, USA. Also present were: O. kolchida, O. lyrata, and O. ostertagi. The co-occurrence of specific pairs of species (O. leptospicularis: O. kolchida and O. ostertagi: O. lyrata) supports the...

Author(s)
Mulrooney, D. M.; Bishop, J. K.; Zimmerman, G. L.
Citation
Journal of the Helminthological Society of Washington, 1991, 58, 2, pp 260-262
Abstract

A study was initiated to (1) determine species of gastrointestinal nematodes present in cattle in selected areas of Oregon, USA, (2) examine seasonal abundance of these nematodes as an indicator of periods of transmission, and (3) determine when developmental inhibition occurs in the major genera...

Author(s)
Rickard, L. G.; Zimmerman, G. L.
Citation
Veterinary Parasitology, 1992, 43, 3/4, pp 271-291
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

The epidemiology of bovine ostertagiasis in northwestern USA (Oregon, Montana, Washington State, Idaho, Wyoming, California, Nevada, Utah) is reviewed under the headings: factors influencing epizootiology (elevation, topography, moisture, rainfall, snow, geothermal water, irrigation); epidemiology...

Author(s)
Zimmerman, G. L.; Worley, D. E.; Rickard, L. G.
Citation
Veterinary Parasitology, 1993, 46, 1-4, pp 303-311

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