Adding feed additive calcium formate to the diet with plant protein as the main component before 30 kg piglet weight can effectively improve feed digestibility and performance.

After adding 5% feed additive calcium formate to piglets' diets, the pH value of stomach and jejunum decreased. After acid chyme enters into the small intestine, it can secrete gastrointestinal inhibitory hormone, slow down the speed of gastric emptying and the movement of food in the intestine, prolong the stay time of food in the stomach, make the food fully mixed with saliva, gastric juice and other digestive fluids, which is conducive to nutrition in food Digestion and absorption of substances.

At the same time, calcium formate in feed can form chelates with essential mineral elements such as Cu, Fe, P, Zn, Mg, which are easy to be absorbed and utilized and have high biological potency, thus promoting their absorption and retention.

The main reason is that some mineral elements are easy to form insoluble and hard to absorb salts in the alkaline gastrointestinal tract, while calcium formate in feed can reduce the pH value of the intestinal tract and promote the absorption and utilization of the minerals in feed by fat.