Purina® Start & Grow® Medicated provides essential care from the moment your chicks hatch. This specially formulated feed supports strong early development and promotes digestive health and immune function. Designed to be used from day one up to week 18, it helps your chicks grow into healthy hens ready to start laying. The medicated formula also protection against coccidiosis when immunity is not yet established, ensuring your flock gets start possible. Model Number: