Efficacy and Application of Compound Enzyme Preparation in Animal Production
Enzymes are widely used as feed additives in poultry, livestock and even aquaculture. Due to the limited effect of a single enzyme preparation and the effect is not obvious, the aquaculture industry is currently dominated by the use of compound enzyme preparations.
1. Types of compound enzyme preparations
Compound enzyme preparations are mainly composed of four types of enzyme preparations: 1. Compound enzyme preparations mainly composed of protease and amylase 2. Compound enzyme preparations mainly composed of β-glucanase 3. Compound enzyme preparations composed of cellulose Enzyme, pectinase-based compound enzyme preparation 4, a compound enzyme preparation composed of protease, amylase, β-glucanase, cellulase, and pectinase in proportion. Enzyme preparations with the fourth type of ratio have a stronger digestive aiding effect.
2. The mechanism and efficacy of compound enzyme preparation
1. Supplement the deficiency of the animal's own endogenous enzymes and stimulate the secretion of the animal's own enzymes. Adult healthy animals can secrete a certain amount of amylase, protease, lipase and other digestive enzymes. However, when juvenile animals are under high temperature, cold, group transfer, disease, weaning and other stressful conditions, the ability of the animal to secrete enzymes is weak or prone to digestive disorders, and the secretion of spoon-derived digestive enzymes is often insufficient. The addition of enzyme preparations can provide more decomposed substrates to stimulate the secretion of endogenous digestive enzymes, thereby improving feed digestibility and promoting animal production performance.
2. Crack plant cell walls and decompose soluble non-starch polysaccharides to improve the utilization of nutrients. A variety of active enzymes can effectively decompose and digest some molecular polymers in the feed into nutrients that animals can easily absorb, or decompose into small fragments of nutrients for further digestion by other digestive enzymes. Some macromolecular substances are difficult for animals to decompose and absorb, so the addition of compound enzyme preparations can promote the decomposition and digestion of nutrients in feed, thereby improving feed utilization.
3. Improve the health level of animals and increase the metabolic level. The use of enzyme preparations has a positive effect on controlling the fermentation of intestinal microorganisms, enhancing immunity and reducing gastrointestinal diseases. Elevation of intact soluble non-starch polysaccharides has been reported to increase the activity of fermentative microorganisms in the small intestine in a detrimental manner. After adding enzyme preparations, the molecular weight of non-starch polysaccharides is reduced, the viscosity of chyme is reduced, microbial fermentation in the ileum is reduced, and harmful substances such as amines and cresols in the intestinal tract are reduced, thereby controlling the excessive intestinal microbial flora. Fermentation has adverse effects on digestive physiological functions, and can also increase the activity of endogenous proteases, promote the production of anti-inflammatory polypeptide substances, and control diarrhea caused by indigestion of feed. At the same time, the enzyme also has a regulatory effect on thyroid hormone, insulin, glucagon growth hormone, insulin-like growth factor and other hormones in the body, and can eliminate the inhibitory effect of β-mannan on insulin release, thereby directly affecting the metabolism of nutrients , Improve metabolism. The main reasons why enzymes have a regulating effect on hormone secretion function: First, while enzyme preparations improve the digestion, absorption and utilization of nutrients, they also improve the environment for hormone secretion, which is beneficial to the secretion of function. Second, nutrients such as carbohydrates not only have nutritional effects, but also have hormone-like activity, which can increase or inhibit the activity of certain hormones. The third is that enzyme preparations, as microbial fermentation products, may contain physiologically active peptides, and these peptides act on the cell receptors of the neuroendocrine system to produce physiological effects. Fourth, after the diet is treated with enzymes, physiologically active oligosaccharides may be produced to participate in the neuroendocrine of the body.
3. Precautions for using enzyme preparations
1. Enzyme preparations cannot replace premixes, and the nutritional balance should be kept as far as possible in the feed; it can be used together with other additives such as premixes.
2. It is not recommended to add the enzyme preparation to the feed for cooking; only add it when it is cooled below 40°C.
3. There will be no mutual negative impact during the vaccination and treatment period; both pregnant animals and female poultry can be used.
4. After continuous use of enzyme preparations, the excretion of animal feces may decrease by about 35% compared with the past, which is the effect brought about by the improvement of digestion and absorption rate; the odor and ammonia gas in the farms have been greatly reduced, forming an ecological breeding environment for probiotics , The feces and sewage channels and storage tanks can be automatically decomposed to improve water quality.