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Vitamin B3 Deficiency, Pellagra
Niacin is B vitamin that is very important for newly hatched ducklings. It is needed for proper growth and prevention of leg deformities. Ducklings consuming a diet with not enough niacin are susceptible to developing bowed legs and stunted growth.
The best food sources of niacin are animal and fish by-products, distiller’s grains and Brewer's yeast, various distillation and fermentation solubles and certain oilseed meals. In addition, foods that contain tryptophan, an amino acid the body converts into niacin. The availability of niacin in grain and grain by-products is very low.
Foods with highest amounts of niacin include:
Tuna (light, canned, packed in water) - 3 ounces (8.6-11.3 mg of Niacin)