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Abstract

The efficacy of eprinomectin in an extended-release injection (ERI) formulation was evaluated against infections with third-stage larvae or eggs of gastrointestinal and pulmonary nematodes in cattle under 120-day natural challenge conditions in a series of five studies conducted in the USA (three...

Author(s)
Rehbein, S.; Baggott, D. G.; Johnson, E. G.; Kunkle, B. N.; Yazwinski, T. A.; Yoon, S.; Cramer, L. G.; Soll, M. D.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Veterinary Parasitology, 2013, 192, 4, pp 321-331
Abstract

A series of 10 dose confirmation studies was conducted to evaluate the persistent activity of an extended-release injectable (ERI) formulation of eprinomectin against single point challenge infections of gastrointestinal and pulmonary nematodes of cattle. The formulation, selected based on the...

Author(s)
Soll, M. D.; Kunkle, B. N.; Royer, G. C.; Yazwinski, T. A.; Baggott, D. G.; Wehner, T. A.; Yoon, S.; Cramer, L. G.; Rehbein, S.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Veterinary Parasitology, 2013, 192, 4, pp 313-320
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

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

In a controlled study, 30 calves, naturally infected with nematodes, were allotted to 3 treatments by a restricted randomization based on weight and faecal nematode counts. Calves, penned by treatment groups, were untreated controls, or given doramectin (200 µg/kg s.c.) or ivermectin (200 µg/kg...

Author(s)
Yazwinski, T. A.; Tucker, C. A.; Featherston, H. E.; Walstrom, D. J.
Citation
Veterinary Record, 1997, 140, 13, pp 343-344
Abstract

20, 4- to 8-month-old beef calves with a minimum faecal nematode count (EPG) of 30 were treated with a subcutaneous injection of either doramectin (Dectomax) at a rate of 0.2 mg/kg bodyweight or saline controls. Faecal samples were collected on days 14, 15 and 16 after treatment for EPG counts and...

Author(s)
Yazwinski, T. A.; Tucker, C.; Featherston, H.
Citation
Veterinary Record, 1994, 135, 4, pp 91-92
Abstract

The duration of ivermectin persistence was assessed by measuring posttreatment nematocidal effectiveness; topical and injectable formulations of ivermectin were evaluated. 35 nematode-free calves were randomly allocated to 1 of 5 treatment groups (7 calves/group). The treatment (Trt) group...

Author(s)
Yazwinski, T. A.; Featherston, H.; Tucker, C.; Johnson, Z.
Citation
American Journal of Veterinary Research, 1994, 55, 10, pp 1416-1420
Abstract

In this study to assess the persistence of abamectin (Avomec, Duotin) as shown by its efficacy against some common nematode parasites, 14 castrated male calves which were free of parasitic nematodes were treated with abamectin (200 µg/kg s.c.; 7 calves) or acted as controls (7 calves). 14 days...

Author(s)
Yazwinski, T. A.; Tucker, C.; Featherston, H.
Citation
Veterinary Record, 1994, 134, 8, pp 195
Abstract

62 naturally parasitized beef mixed-breed or Holstein cattle, either 6 to 11 or 48 to 96 months old, were used to assess the efficacy of eprinomectin at 4 geographic locations in the USA (1 each in Arkansas and Idaho and 2 in Missouri) in 1994. Cattle were housed 21 to 27 days before treatment to...

Author(s)
Yazwinski, T. A.; Johnson, E. G.; Thompson, D. R.; Drag, M. D.; Zimmerman, G. L.; Langholff, W. K.; Holste, J. E.; Eagleson, J. S.
Citation
American Journal of Veterinary Research, 1997, 58, 6, pp 612-614
Abstract

Oxfendazole (22.5% suspension) was injected intraruminally into 40 cattle; 10 were kept as untreated controls. After 7 days the cattle were killed, and efficacies (for all nematodes and stages combined) were 97.4% (at a dose of 1.125 mg/kg), 98.8% (2.25 mg/kg), 99.5% (4.50 mg/kg) and 99.8% (6.75...

Author(s)
Yazwinski, T. A.; Presson, B. L.; Featherstone, H.
Citation
American Journal of Veterinary Research, 1986, 47, 2, pp 326-328

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