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...

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...

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...

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...

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...