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Niacin Deficiency

Vitamin B3 Deficiency, Pellagra

Niacin Deficiency in Ducklings Overview

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.

Dietary sources
Niacin food sources for ducks
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.

Food sources
Foods with highest amounts of niacin include:
  • Brewer's Yeast
  • Tuna (light, canned, packed in water) - 3 ounces (8.6-11.3 mg of Niacin)
  • Peanuts, dry roasted - 1 oz (3.8 mg of Niacin)
  • Lentils, cooked - 1 cup (2.1 mg of Niacin)
  • Symptoms

    Poor feathering
    Enlarged hock joints
    Twisted legs
    Bowed legs


    • History
    • Clinical signs
    • Physical exam
    • Diet analysis


    NetTex Poultry Nutri Drops
    Brewers Yeast Pure
    Brewers Yeast (5 lbs / 15 cups)
    MethodMethod Summary
    Niacin100 mg daily parenterally, in addition to 7.5% (75 g/kg) of brewers yeast added to the diet
    Supportive care



    Age Range

    Newly hatched ducklings are more at risk of niacin deficiency

    Risk Factors

    • Feeding ducklings starter feed intended for chickens