Schering - An anabolic agent which increases rate of weight gain and improves feed conversion of weaned beef calves, growing beef cattle, feedlot steers or heifers, and suckling beef calves. Each implant contains 36 mg. of zeranol. 24 doses per cartridge. Implant administered subcutaneous or backside of ear. Do not use before 1 month of age or after weaning in heifers intended for reproduction. Not for use in bulls intended for reproduction or dairy animals. No slaughter withdrawal period.