Sodium bicarbonate, a white crystalline powder, is soluble in water and weak alkaline. I. Mechanism of Function 1. Sodium bicarbonate can neutralize stomach acid to dissolve mucus, reduce the viscosity of digestive juices, and strengthen the contraction of the gastrointestinal , acid suppression and increase appetite. 2. Feed supplemented with sodium bicarbonate in order to give supplement for carbonate caused by the heat respiration, thereby improving the body's calcium metabolism. 3. Sodium bicarbonate can be maintained at optimum phosphorus level which is necessary to form eggshell. 4. Sodium bicarbonate in the digestive tract biodegradable emit CO2, thus take away a lot of heat, conducive to the heat balance of the body to resist hot. 5. To add sodium bicarbonate in Feed, can provide the source of sodium, so that the blood to maintain a suitable concentration of sodium.