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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 eprinomectin in an extended-release injection (ERI) formulation in the treatment of cattle harboring naturally acquired nematode populations (including inhibited nematodes) was evaluated. Five studies were conducted under a similar protocol in the USA, the UK, and in Germany. All...

Author(s)
Hunter, J. S., III; Yoon, S.; Yazwinski, T. A.; Williams, J. C.; Rehbein, S.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Veterinary Parasitology, 2013, 192, 4, pp 346-352
Abstract

Seven studies were conducted in commercial grazing operations to confirm anthelmintic efficacy, assess acceptability, and measure the productivity response of cattle to treatment with eprinomectin in an extended-release injectable formulation (ERI) when exposed to nematode infected pastures for 120 ...

Author(s)
Kunkle, B. N.; Williams, J. C.; Johnson, E. G.; Stromberg, B. E.; Yazwinski, T. A.; Smith, L. L.; Yoon, S.; Cramer, L. G.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Veterinary Parasitology, 2013, 192, 4, pp 332-337
Abstract

The effectiveness, safety and production-enhancing benefit (improved weight gains) of moxidectin long-acting injection given subcutaneously in the ear at the rates of 0.75, 1.0 and 1.5 mg/kg bw were evaluated in three studies under common protocol. The only adverse reaction to treatment was a mild...

Author(s)
Yazwinski, T. A.; Williams, J. C.; Smith, L. L.; Tucker, C.; Loyacano, A. F.; DeRosa, A.; Peterson, P.; Bruer, D. J.; Delay, R. L.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2006, 137, 3/4, pp 273-285
Abstract

Persistent anthelmintic efficacies of topical formulations (all at a dosage of 500 µg/kg) of doramectin (DOR, Dectomax), ivermectin (IVM, Ivomec), eprinomectin (EPR, Eprinex) and moxidectin (MOX, Cydectin), in comparison with untreated control cattle (CONT), were studied in stocker beef calves...

Author(s)
Williams, J. C.; Loyacano, A. F.; DeRosa, A.; Gurie, J.; Clymer, B. C.; Guerino, F.
Citation
Veterinary Parasitology, 1999, 85, 4, pp 277-288
Abstract

Two dose titration studies using 0, 125, 250 and 500 µg of eprinomectin/kg of body weight were carried out in Louisiana and Georgia, USA, and 2 dose confirmation studies of selected therapeutic dosage (500 µg/kg) were carried out in Scotland and France. Monitor calves were used to determine...

Author(s)
Williams, J. C.; Stuedemann, J. A.; Bairden, K.; Kerboeuf, D.; Ciordia, H.; Hubert, J.; Broussard, S. D.; Plue, R. E.; Alva-Valdes, R.; Baggott, D. G.; Pinkall, N.; Eagleson, J. S.
Citation
American Journal of Veterinary Research, 1997, 58, 4, pp 379-383
Abstract

Four groups of 18 crossbred beef steer calves (3 replicates of 6 per group) were used to compare the persistent efficacy of doramectin injectable, ivermectin injectable and ivermectin pour-on against naturally acquired infections of gastrointestinal nematodes during winter-spring grazing in...

Author(s)
Williams, J. C.; Loyacano, A. F.; DeRosa, A.; Gurie, J.; Coombs, D. F.; Skogerboe, T. L.
Citation
Veterinary Parasitology, 1997, 72, 1, pp 69-77
Abstract

The epidemiology of Ostertagia ostertagi as primarily defined in weaner-yearling cattle in the USA and other parts of the world are reviewed and some of the factors which operate in population changes of the parasite through different age classes are considered under the headings: epidemiology in...

Author(s)
Williams, J. C.; Knox, J. W.; Loyacano, A. F.
Citation
Veterinary Parasitology, 1993, 46, 1-4, pp 313-324
Abstract

The anthelmintic efficacy of ivermectin (IVM) delivered from a sustained-release (SR) bolus was evaluated against natural infections with gastrointestinal tract nematodes in 12 crossbred beef heifers in spring in Louisiana, USA. The 12 calves were randomly allotted to 2 groups of 6 calves each....

Author(s)
Williams, J. C.; Plue, R. E.
Citation
American Journal of Veterinary Research, 1992, 53, 5, pp 793-795
Abstract

A total of 324 steers were randomly allotted into 4 treatment groups. Preliminary slaughters indicated that 95% of the cattle had O. ostertagi inhibited larvae. Nine calves from each group were examined at slaughter for efficacy evaluation 12 or 13 days after treatment. Efficacies against inhibited ...

Author(s)
Williams, J. C.; Bechtol, D. T.; Hollis, L. C.; Herschler, R. C.
Citation
Agri-Practice, 1991, 12, 5, pp 14-15, 17-20
Abstract

Levamisole (LEV) was tested in 4 experiments to compare efficacy values against O. ostertagi when larval maturation was occurring (September), following inhibition and also when populations were expected to be largely adult (winter). A primary objective was to determine the importance of developing ...

Author(s)
Williams, J. C.; Knox, J. W.; Marbury, K. S.; Swalley, R. A.; Eddi, C. S.
Citation
Veterinary Parasitology, 1991, 40, 1-2, pp 73-85

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