Lipase is the most basic enzyme of fat metabolism, if it is lacking, it will endanger the health of the body. Monogastric animals can secrete endogenous digestive enzymes such as amylase, protease and lipase.

The digestive function of young poultry and young animals is not fully developed, and the secretion of endogenous digestive enzymes is insufficient.

In modern pig production, in order to shorten the reproductive cycle of sows and adapt piglets to plant protein diets as soon as possible, early weaning or even ultra-early weaning is generally implemented in pig production, but early weaning produces obvious stress, which affects the development of the digestive system and The secretion of digestive enzymes had adverse effects, and the secretion of digestive enzymes decreased sharply, and then gradually recovered and increased after 2 weeks of weaning.

Insufficient secretion of digestive enzymes within two weeks after weaning is one of the main factors for growth retardation of weaned piglets; most digestive enzymes of chicks do not reach their peak until about 2 weeks old, and some (such as lipase) will not reach their peak until about 21 days old . Therefore, insufficient secretion of digestive enzymes is one of the main limiting factors for chicks to use feed.

Adding exogenous amylase, protease, lipase, etc. to the diet of young poultry and young livestock can supplement the deficiency of endogenous enzymes in the body, reduce the weaning stress of weaned piglets, and improve the production performance of animals. Some studies have shown that adding exogenous enzymes to pig and poultry diets can also promote the secretion of endogenous digestive enzymes, which is beneficial to the digestion, decomposition, absorption and utilization of nutrients by livestock and poultry.

Exogenous lipase can improve the fat digestibility in the feed, especially the fat digestibility in rice bran, and thus can improve the apparent metabolizable energy value and feed conversion rate of rice bran.