NatureServe 10LB duck starter/grower with essential oils is a non-medicated feed that offers complete nutrition to meetthe demands of healthy, growing ducks. Prepared as a crumble for balanced nutrition in every bite with no need for supplementation. Specially formulated with essential oils, prebiotics and probiotics to help with immunity and digestive health. It is also fortified with all the vitamins, enzymes and minerals needed for healthy growth, strong bones and sound development. Essential oils of cinnamon, oregano and white thyme to help support immunity.