Future development trend of aquatic feed

Introduction: with the continuous development of science and technology and the increasing improvement of human living standards, the new aquaculture industry will develop from the current quantity type to the quality type People are flocking to "green food" and "pollution-free food" In addition, there is a growing demand for the aquaculture industry to prevent pollution, prohibit the use of illegal drugs such as hormones, avoid heavy metals, drug residues, and protect the ecology The high quality of aquatic products will be the necessity of the development of aquaculture in the new century Many researchers at home and abroad, aiming at the pollution of new products, have done a lot of in-depth research on the beverage processing technology while studying the substitution of a variety of environmental friendly beverage raw materials and additives, and reached a consensus The use of extruded feed is to produce high-quality and safe animal products, The main means to ensure human health is also the development trend of feed industry in the future At present, many countries and regions in Europe have formed a new mode of processing and breeding with puffed drinks as the mainstream In recent years, our country is mainly in aquaculture With the continuous increase of aquaculture varieties, it has different properties Feed should be based on the feeding habits of different fish, with different properties - floating, sinking or slow sinking At the same time, it can keep intact in the water for a certain time, so that the animals have enough time to eat In order to achieve these properties, extrusion technology is the only way An aquatic feed company in Beijing, as the key production enterprise of domestic aquatic feed, has introduced a set of advanced research on extruded aquatic feed from abroad The extruded sturgeon, rainbow trout, prawn and sea water fish feed has been spread all over the country The extruded aquatic feed is a kind of high quality environmental protection feed with low pollution, low waste, high efficiency and high conversion rate Extrusion can improve the digestibility of feed (1) The heat, humidity, pressure and various mechanical functions in the extrusion process can improve the gelatinization degree of starch in feed, destroy and soften the cell wall part of fiber structure, release some digestible materials surrounded and combined, thus improving the digestibility and utilization rate of feed (2) In the process of extrusion, moderate heat treatment can passivate some protease inhibitors, such as antitrypsin and urease, and eliminate the side effects of protease inhibitors on animals At the same time, hydrogen bonds and other secondary bonds in proteins are destroyed and denatured The denatured protein molecules are fibrous and flow retarded, which increases the contact with the enzyme in the animal body and is easier to be hydrolyzed by the enzyme, so it is conducive to the digestion and absorption of aquatic animals, thus improving the digestibility and utilization rate of feed (3) Extrusion can significantly reduce the content of free gossypol in cottonseed and cottonseed meal, and has a good detoxification effect on mustard glucoside in rapeseed meal, toxin protein and denaturant in castor seed meal 2、 The water quality and environmental pollution of extruded aquatic feed are small Extruded aquatic feed has a certain degree of cohesion or cohesion due to the gelatinization and organization of starch in the material Its stability is generally more than 12 hours, and the longest time can be up to 36 hours This avoids the non nutritive adhesive which can not be digested and absorbed by fish, shrimp, etc to strengthen the stability of feed particles, and even has side effects What's more, it prevents feed particles from collapsing without being ingested, resulting in a large amount of nutrient loss and feed waste, further leading to the decrease of dissolved oxygen content in water and the pollution of residual bait to water quality 3、 Extrusion can eliminate harmful microorganisms in feed Through the high temperature, high humidity, high pressure and expansion of extrusion technology, the vast majority of harmful microorganisms often contained in feed materials (especially animal materials) are killed, which not only helps to improve the physical fitness of fish, enhance the disease resistance of fish, but also eliminates the oxidative degradation of feed by lipase secreted by microorganisms in feed materials The storage stability of feed was improved It can be seen that extruded aquatic products do have incomparable advantages over traditional hard pellet feed It is not only economic but also environmental protection, which is the inevitable trend of the development of aquaculture industry with the theme of green and environmental protection at present and in the future (author:) share to feed Weibo share to: