Advantages of Jinan Chenyang Technology Co., Ltd. extruded animal feed
(1) Improve the utilization rate of feed
The heat, humidity, pressure and various mechanical effects in the puffing process break the 1,4-glucosidic bond in the starch molecule and produce low molecular weight products such as glucose, maltose, maltotriose and maltodextrin. The puffing process can make the starch paste The degree of intensification increases, the cell wall of the fibrous structure is partially destroyed and softened, and part of the digestible substances that are surrounded and combined are released. At the same time, the fat penetrates from the inside of the granule to the surface, making the feed have a special flavor and improving the palatability. Therefore, the feeding rate improve. In addition, the protein in the vegetable protein feed can passivate some protease inhibitors such as antitrypsin and urease after moderate heat treatment, and destroy the hydrogen bonds and other secondary bonds in the protein, causing the original polypeptide chain Changes in spatial conformation lead to protein denaturation, the denatured protein molecules become fibrous, the peptide chain is stretched loose, the molecular surface area increases, the flow is blocked, and the contact with the enzyme in the animal body is increased, which is beneficial to the digestion and absorption of aquatic animals. Improve the digestion and utilization of nutrients by 10% -35%.
(2) Reduce environmental pollution
The extruded floating fish feed has good stability in water. The feed granules processed by extrusion and puffing rely on the starch gelatinization and protein texture inside the feed to make the product have a certain cohesive or binding force. Its stability is generally more than 12 hours, and the longest can be up to 36 hours, so it can be reduced. Dissolution and precipitation loss of feed nutrients in water. Data show that the general use of extruded floating fish feed can save 5%-10% compared with powder or pellet feed, and can avoid feed residue in water and reduce water pollution.
(3) Reduce the occurrence of diseases
Feed raw materials often contain harmful microorganisms, such as aerobic organisms, neutrophils, Escherichia coli, mold, Salmonella, etc., and the content of animal feed raw materials is relatively large. The high temperature, high humidity and high pressure of puffing can kill most of the harmful microorganisms. According to data, the number of E. coli per gram of raw material reaches 10,000, and less than 10 remain after puffing. Salmonella can basically be killed after puffing at a high temperature above 85°C, which helps to maintain water quality and reduce aquatic production. Unfavorable environmental factors for breeding, while reducing the mortality of aquatic animals.
(4) Increase the breeding density
Under artificial breeding conditions, the increase in breeding density means that the rate of return obtained by the breeder is higher. When the breeding density per unit water body increases, the space for fish in the breeding water body shrinks, and the requirements for water quality will be much higher than the level of the natural environment. Because the use of extruded compound feed can reduce the feed coefficient and greatly reduce the residual bait and excrement discharged into the water body, it is possible to greatly increase the breeding density.
(5) Extend the storage period of feed
Extrusion processing improves raw material stability by reducing bacterial content and oxidation. When the extruded product is dried and cooled, the water activity (AW) of the feed has been reduced to 0.6 or even 0.4, which is equivalent to a moisture content of 8% to 10%, which better improves the storage stability of the feed.
(6) Feeding management is convenient
Aquatic extruded feed can be suspended on the water surface (water) for a long time, and there is no need to set up a special feeding platform when feeding, and only need to feed at fixed points. The fish need to float on the surface of the water when feeding, so that the feeding situation of the fish can be directly observed, the feeding amount can be adjusted in time, and the growth and health status of the fish can be understood in time. Therefore, the use of aquatic extruded feed is conducive to scientific feeding management, which not only saves a lot of time, but also improves labor productivity.
(7) It can meet the needs of animals with different feeding habits
According to different processing techniques, extruded feed can be divided into three types: floating, slow-settling, and rapid-settling. At present, about 80% of fish feed is sinking feed, such as shrimp, salmon, salmon, yellowtail tuna all like sinking feed, while catfish, tilapia, eel, and most fish juveniles like floating feed, Catfish and tilapia have equal preference for sinking feed and floating feed. In addition, extruded feed can also meet some special requirements, such as low moisture feed, high fiber feed, etc.
The necessary inspections of Chenyang have been conducted. These inspections include moisture content, dimension stability, static loading, colors, and texture.