Chicks grow quickly, so a proper start is crucial. Purina(R) Start and Grow(R) Non-medicated Crumbles feed provides all the complete and balanced nutrition chicks need for a healthy start and a lifetime of success. For chicks and pullets from day one through week 18 that have been vaccinated for coccidiosis. FEEDING DIRECTIONS: Feed Purina(R) Start & Grow(R) Non-Medicated Premium Poultry Feed continuously as the sole ration from day-old until onset of egg production and then switch to Purina(R) Layena(R) or Layena(R)+ Premium Poultry Feed. Provide fresh clean water at all times. | Purina Start and Grow Non-Medicated Crumbles Poultry Feed | Size 50 lbs