Improved ivermectin-containing daily ration extruded feeds for domesticated
household pets such as cats and dogs are provided so that a pet consuming
the feeds receives quantities of ivermectin sufficient to establish and
maintain substantially constant concentrations of the drug in the pet's
bloodstream. The feeds are produced by extrusion with addition of minor
quantities of ivermectin so as to uniformly distribute the drug throughout
the extruded product. Ivermectin levels of from about 2-1500 .mu.g/kg of
extruded feed are preferred.
