Soll, M.D.; Carmichael, I.H.; Gross, Sheila J.; Bigalke, R.D.
(Published by the Government Printer, Pretoria., 1987)
The efficacy of ivermectin, administered in a sustained release formulation by intraruminal pumps at approximate daily dose rates of 20, 40 and 60 µg/kg, was evaluated in 16 cattle against induced infestations of 3 strains ...