Medicated Chick Starter Grower Crumbles Manna Pro® Medicated Chick Starter Grower is formulated for the development of active immunity to help prevent coccidiosis increased rate of weight gain and improved feed efficiency in replacement chickens. Medicated (with Amprolium) complete crumble for chicks from 0 to 16 weeks 18% protein for weight gain and muscle development Fortified with vitamins and minerals for healthy growth and sound development