Add enzymes to improve fish feed utilization

feed enzyme is a non-residual, pollution-free, pollution-free environmental-friendly green feed additivesBecause of the high protein content of fish feed, although fish have a higher digestion and absorption rate of protein (78%-90%), but endogenous protease can not fully function, add exogenous protease, can make up for the lack of endogenous protease, improve protein digestion and absorption rate of about 10%, thus playing a role in saving proteinhAt
Sugar is a relatively cheap feed raw material, although fish to starch digestion and absorption rate is very low, but in order to ensure the safety of feed and reduce feed costs, the amount of added sugar in the feed is still 20% to 50%After adding amylase and glycosase, it can supplement the serious lack of amylase in fish, and increase the digestion and absorption rate of starch from 20% to 40% to 80%, so as to increase feed energy, improve feed utilization rate, reduce protein as energy consumption, reduce feed cost and so onhAt
Fish in animal classification is a unique group, the vast majority of fish are low vertebrates, life-long life in the water, forming a different from the livestock and poultry of their own unique digestive physiological characteristicsFish digestive system is not as perfect as livestock, endogenous enzyme secretion is not as complete as livestock, affect ingenuity in the feed of the digestion and absorption, the need to add exogenous enzymes to assist digestionhAt
Most fish have no stomach, only the digestive tract, stomachless fish digestive tract environment is neutral such as carp fish or partial alkaline, in fish feed to add exogenous enzymes need to pay attention to choose to adapt to the neutral alkaline environmental conditions of the enzymehAt
Fish life life in water, due to the buoyancy of water, less energy consumption, can save energy in the feed, but the demand for protein is high, suitable energy protein ratio of 31 to 60 kJ/ gThe digestion and absorption rate of sugar yin substances is low, the digestion and absorption rate of sugar substances is not the same with different food, carnivorous fish (mackerel, mackerel) is 30% to 40%, the omnivorous fish carp, mackerel is 60%, herbivorous fish herblets, herring slugs are more than 70%From the endogenous amylase activity, the high and low order is for herbivorous fish, omnivorous fish, carnivorous fishFish digestive tract does not contain xylitose, protease activity is relatively low, cellulose has no ability to break down, the corresponding exogenous enzyme must be addedhAt
The study found that the application advantages of feed enzymes in fish feed are mainly in the following 10 aspects: (1) to promote fish growth, growth rate can be improved by 8% to 16% ;(2) to supplement endogenous enzymes, improve the effect of fish's own intestinal enzymes, improve the absorption rate of nutrients, participate in cell wall degradation, make the enzyme and substrate fullcontact, improve the digestion of existing nutrients, improve feed conversion rate; Capacity to improve its survival rate, (4) improve group neatness, (5) change the composition of fish tissues, (6) reduce fish stress response, reduce the negative impact of fish in harsh environmental conditions on their production performance, (7) change the distribution of bacteria in the fish digestive tract, (8) reduce fish manure pollution, improve the culture environment, (9) reduce the viscosity of fish digestive tract content, (10) eliminate anti-nutrient factorshAtfeed enzyme is a non-residual, pollution-free, pollution-free environmentally friendly green feed additiveBecause of the high protein content of fish feed, although fish have a higher digestion and absorption rate of protein (78%-90%), but endogenous protease can not fully function, add exogenous protease, can make up for the lack of endogenous protease, improve protein digestion and absorption rate of about 10%, thus playing a role in saving proteinhAt
Sugar is a relatively cheap feed raw material, although fish to starch digestion and absorption rate is very low, but in order to ensure the safety of feed and reduce feed costs, the amount of added sugar in the feed is still 20% to 50%After adding amylase and glycosase, it can supplement the serious lack of amylase in fish, and increase the digestion and absorption rate of starch from 20% to 40% to 80%, so as to increase feed energy, improve feed utilization rate, reduce protein as energy consumption, reduce feed cost and so onhAt
Fish in animal classification is a unique group, the vast majority of fish are low vertebrates, life-long life in the water, forming a different from the livestock and poultry of their own unique digestive physiological characteristicsFish digestive system is not as perfect as livestock, endogenous enzyme secretion is not as complete as livestock, affect ingenuity in the feed of the digestion and absorption, the need to add exogenous enzymes to assist digestion hAt
　　Most fish have no stomach, only the digestive tract, stomachless fish digestive tract environment is neutral such as carp fish or partial alkaline, in fish feed to add exogenous enzymes need to pay attention to choose to adapt to the neutral alkaline environmental conditions of the enzyme hAt
　　Fish life life in water, due to the buoyancy of water, less energy consumption, can save energy in the feed, but the demand for protein is high, suitable energy protein ratio of 31 to 60 kJ/ g The digestion and absorption rate of sugar yin substances is low, the digestion and absorption rate of sugar substances is not the same with different food, carnivorous fish (mackerel, mackerel) is 30% to 40%, the omnivorous fish carp, mackerel is 60%, herbivorous fish herblets, herring slugs are more than 70% From the endogenous amylase activity, the high and low order is for herbivorous fish, omnivorous fish, carnivorous fish Fish digestive tract does not contain xylitose, protease activity is relatively low, cellulose has no ability to break down, the corresponding exogenous enzyme must be added hAt
　　The study found that the application advantages of feed enzymes in fish feed are mainly in the following 10 aspects: (1) to promote fish growth, growth rate can be improved by 8% to 16% ;(2) to supplement endogenous enzymes, improve the effect of fish's own intestinal enzymes, improve the absorption rate of nutrients, participate in cell wall degradation, make the enzyme and substrate fullcontact, improve the digestion of existing nutrients, improve feed conversion rate; Capacity to improve its survival rate, (4) improve group neatness, (5) change the composition of fish tissues, (6) reduce fish stress response, reduce the negative impact of fish in harsh environmental conditions on their production performance, (7) change the distribution of bacteria in the fish digestive tract, (8) reduce fish manure pollution, improve the culture environment, (9) reduce the viscosity of fish digestive tract content, (10) eliminate anti-nutrient factors hAt (Land Rock Front)