Raising healthy chickens and ducks requires lots of protein and nutrients - so it only makes sense to make sure your backyard chickens are in tip top shape with a nutritious dietary supplement! Our brewer's yeast is formulated by experts and verified by independent labs to provide extra crucial nutrients and vitamins. Probiotic brewer's yeast is the perfect dietary supplement to ensure your backyard flock grows healthy and strong. Our supplement is fortified with B3 (niacin), B6, and B12 all essential vitamins for all backyard fowl, and especially ducklings. For extra power, we've also added garlic, oregano, and echinacea - all herbs traditionally used to support healthy immune systems. Feeding directions: Add 1 tablespoon per chicken or duck to daily feed ration or add one 20 ounce container to 40 - 50 pounds of feed. For 4 pound and 8 pound sizes, add up to 2 pounds per 40 - 50 pounds of feed as part of a balanced diet. For ducklings, add one 20 ounce canister to 40 - 50 pounds of feed or 1 teaspoon per duckling to daily ration. Can be fed to day old chicks and ducklings through adulthood. Guaranteed Analysis: Crude Protein 40% (min), Crude Fat 1% (min), Crude Fiber 6% (min)