Evaluation of Doramectin Pour-On Solution for Gastrointestinal Parasite Control in Stocker Calves

Abstract

Doramectin pour-on (Dectomax® Pour-On) solution is an endectocide that is highly effective in the treatment of gastrointestinal roundworms, lungworms, grubs, and sucking and biting lice of cattle. Doramectin pour-on solution also has label indications for protection from reinfection (greater than 90% efficacy) of 28 days for Ostertagia ostertagi, Cooperia punctata, and Oesophagostomum radiatum and 21 days for Dictyocaulus viviparus and Cooperia oncophora. To evaluate the field efficacy of doramectin pour-on solution, four studies were conducted with stocker beef cattle treated with doramectin pour-on solution at a dose rate of 500 +g/kg body weight compared to untreated control calves. Locations and durations of these studies were Wisconsin (140 days), Arkansas (82 days), Louisiana (140 days), and Tennessee (141 days).