1. Reduced activity of levamisole against Ostertagia ostertagi in dairy calves.
- Author
-
Lyons ET, Tolliver SC, Drudge JH, Hemken RW, and Button FS Jr
- Subjects
- Animals, Cattle, Clinical Trials as Topic, Levamisole administration & dosage, Male, Ostertagiasis drug therapy, Ostertagiasis parasitology, Trichostrongyloidea drug effects, Cattle Diseases drug therapy, Levamisole therapeutic use, Ostertagiasis veterinary, Trichostrongyloidiasis veterinary
- Abstract
Levamisole bolus formulation was administered in single doses, at rates of 5.8 to 8.1 mg/kg body weight, in 3 controlled tests in male dairy calves (n = 22) in Kentucky. Removals of natural infections of adult Ostertagia ostertagi were 70% and 76% for calves from a hear with a history of regular treatments with levamisole and 85% for calves from a herd receiving levamisole occasionally. Activity against other abomasal nematodes and lungworms was also evaluated.
- Published
- 1981