2021-09-29
Enzyme is an active substance produced by organisms, and is a catalyst for various biochemical reactions in the body. The digestion, absorption and utilization of various nutrients must rely on the action of enzymes. Enzymes have the characteristics of specificity, high convergence and specificity. There are thousands of enzymes that have been discovered so far. There are more than 300 kinds of enzymes that can be artificially produced, and more than 20 kinds of enzymes are used in the feed industry. The production of active enzyme products through bioengineering methods is called enzyme preparations. Enzyme preparations are a type of feed additives that have been widely used in feed in recent years, and most of the enzyme preparations used in feed additives are digestive enzymes. Enzyme preparation can effectively improve feed utilization rate, save feed raw material resources, has no side effects, does not have adverse effects such as drug residues and drug resistance of drug additives, so it is an environmentally friendly green feed additive.
The main types of enzyme feed additives:
Amylase: Amylase mainly includes α-amylase and glucoamylase. Alpha-amylase can decompose starch macromolecules into easily absorbed medium and low molecular substances. Glucoamylase can further decompose the medium and low molecular substances decomposed by α-amylase into glucose, which can be absorbed and utilized by animals.
Protease: Protease is a hydrolytic enzyme that degrades protein peptide chains, mainly pepsin, trypsin, papain, etc.
Cellulase: Cellulase can destroy the crystalline structure of cellulose, hydrolyze cellulose macromolecules into oligosaccharide fragments, and decompose oligosaccharide substances into glucose.
β-glucanase: β-glucan is widely present in a variety of plant raw materials and is relatively viscous. It is an important antioxidant factor that affects the transmission and absorption of nutrient molecules. β-glucanase can hydrolyze dextran and other macromolecules, reduce the viscosity of substances in the digestive tract, and promote the absorption of nutrients. β-glucanase is an important and widely used enzyme in enzyme preparation feed additives.
Pectinase. Pectin is an anti-nutritional factor in plant raw materials, which affects the utilization rate of feed. Pectinase can effectively destroy pectin and promote the digestion and absorption of nutrients. Pectinase is also a more commonly used feed enzyme preparation.
Phytase: Most of the phosphorus in grains is in the form of phytate phosphorus. Animals do not secrete phytase, so the utilization of this part of phosphorus in grains is low, and it is secreted by adding microorganisms to the feed. Phytase can decompose and release this phosphorus, thereby reducing the amount of inorganic phosphorus added to feed, reducing feed costs, and reducing the excretion of phosphorus in animal manure and reducing environmental pollution. It is currently used more and more. A green feed additive with the best prospects.
Compound enzyme: The compound enzyme is a product made by mixing two or more biologically active enzymes. The compound enzyme is formulated according to the characteristics of different animals and different growth stages. It has a good effect and is currently the most commonly used feed. additive.