Purina® Duck Feed is specifically formulated to meet the elevated niacin levels ducklings need to grow and adult ducks need to maintain proper health. Should be fed to ducks as their sole diet from hatch for their entire life. Supplement laying ducks and geese with Purina® Oyster Shell. Purina® Duck Feed Pellets are available in 5 lb. and 40 lb. bags. Click here for guaranteed analysis and more information.