symptoms of niacin deficiency in ducks
Ducks and turkeys with a niacin deficiency show a severe bowing of the legs and an enlargement of the hock joint. The main difference between the leg seen in niacin deficiency and perosis as seen in manganese and choline deficiency is that with niacin deficiency the Achilles tendon seldom slips from its condyles.n the niacin-deficient hen, weight loss, reduced egg production, and a marked decrease in hatchability can result. Turkeys, ducks, pheasants, and goslings are much more severely affected by niacin deficiency than are chickens.