The use and precautions of the latest commonly used enzyme preparations
1. Phytase. Phytase is the fermentation product of yeast, Aspergillus oryzae, Aspergillus niger, bacteria and other microorganisms. It can be mixed directly and evenly into feed at a dosage of 500 international units per kilogram of feed. Appropriate addition of phytase in the feed can not only greatly increase the utilization of phosphorus in the feed, but also increase the conversion and utilization of calcium, magnesium, copper, iron and other mineral elements, protein, and amino acids in the feed, and increase feed returns. And increase pig weight and reduce environmental pollution.
2. Xylanase. It is the fermentation product of Trichoderma, Aspergillus and Rhizopus. It is mainly added to plant-derived feeds or feeds with high plant-derived material content. The dosage is 300 international units per kilogram of feed. It can well decompose arabinoxylan in grain diets into xylose, xylobiose and xylo-oligosaccharides, thereby improving the comprehensive utilization of nutrients in the feed and reducing fecal excretion.
3. Cellulase. It is a fermentation product of Trichoderma, which can be mixed directly and evenly in feed with high crude fiber content. The usage amount can be referred to the instructions of different products. If cellulase can be used in combination with hemicellulase, pectinase and -glucase, the effect will be better.
4. Protease. Acid protease is a fermentation product of Aspergillus niger, neutral protease is a fermentation product of Bacillus subtilis, and alkaline protease is a fermentation product of Bacillus subtilis and Bacillus licheniformis. The protease is often combined with other enzymes to make a compound enzyme preparation, and the dosage is 0.1% to 0.3% of the piglet feed. Protease can hydrolyze protein into small peptides and amino acids, improve protein utilization and increase pig weight, reduce production costs and nitrogen emissions.
5. Starch acid. It is a fermentation product of Aspergillus niger, etc., which can be directly mixed in the feed evenly, and the dosage can be referred to the product manual. The effect is most obvious when added to diets with high starch content (such as rice, etc.). Amylase can improve the conversion, digestion and utilization of starch in the diet.
6. Lipase. It is the fermentation product of Candida lipolytica, which can be mixed directly and evenly in the feed, and the dosage can be referred to the product specification. It can hydrolyze high-oil feed (such as peanut cake, etc.), greatly improve the conversion, digestion and utilization of this type of feed, and reduce the cost of breeding.
7. Pectinase. It is a fermentation product of yeast, bacteria, etc., which can be directly mixed into the feed evenly, and the dosage can be referred to the product manual. Pectinase is best used in combination with cellulase, protease, lipase and hemicellulase to increase efficiency.
