Niacin deficiency in chickens may be prevented by feeding a diet that contains niacin at â¥30 mg/kg; however, many nutritionists recommend 2â2.5 times as much. An allowance of 55â70 mg/kg of feed appears to be satisfactory for ducks, geese, and turkeys.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.
Histamine release occurs when allergens bind to mast-cell-bound IgE antibodies. Reduction of IgE overproduction may lower the likelihood of allergens finding sufficient free IgE to trigger a mast-cell-release of histamine.
The activation of many mast cells is associated with a severe form of acute allergic reaction termed anaphylaxis, which can cause hives (blisters on the skin), reddening of the skin (flushing), low blood pressure, severe narrowing of the air passages, and even death.