New development of feed enzyme preparation

Introduction: Professor Wang Hongning, a young teacher of Sichuan Agricultural University, presided over the "Ninth Five Year Plan" National Science and technology research and development of new varieties of feed enzyme and food attractant, which recently passed the expert acceptance organized by the Ministry of science and technology of the people's Republic of China In view of the problems that phytase, β - glucanase and food attractants in China mainly depend on imports and high product prices, which affect their application in feed industry, this research has carried out joint research from the aspects of strain screening, fermentation technology, chemical synthesis technology, product coating and stabilization technology, detection method, application technology, etc., and developed phytase, β - glucanase and food attractants with low cost and stable application effect - glucanase and new food attractant products It is understood that most of the phosphorus in plant feed exists in the form of phytate phosphorus, which can not be used by pigs, birds and other monogastric animals On the one hand, in order to meet the needs of pig and bird growth for phosphorus, it is necessary to add expensive inorganic phosphate to feed On the other hand, a large amount of organic phosphorus discharged from feces causes pollution of soil and water At the same time, phytate can also reduce the utilization rate of zinc, manganese, iron, calcium, potassium and other major trace elements and the digestibility and absorption rate of protein, thus reducing the utilization rate of the whole feed A large number of studies have shown that the addition of phytase in pig and poultry diets can improve the absorption rate of phosphorus and plant protein in plant feed, reduce the amount of inorganic phosphorus feed materials in single stomach animals, and reduce the feed cost At the same time, it can reduce the amount of phosphorus in feces by 30% to 50%, and reduce environmental pollution So in recent years, the development of phytase as a new feed additive has become a research hotspot all over the world At the same time, in aquaculture, due to the low intake of artificial feed by fish, it causes great waste, which not only pollutes the water quality but also increases the production cost Therefore, it is one of the effective ways to increase the efficiency of bait transformation by adding bait to the bait Many achievements have been made in this research: one national patent has been applied for; six strains with high yield of phytase and β - glucanase have been screened out; two kinds of phytase products, one kind of β - glucanase and one kind of new fish and shrimp food attractant product have been developed; three sets of production technology and application technology of three new products have been put forward, and advanced detection methods of three products have been established, and the product cost is lower than that of others Imported products In the second two years after the ninth five year plan, the research results were rapidly transformed into productivity.