Production Process and Influencing Factors of Aquatic Expanded Feed

1 feed formula fPD China feed industry information network - based on feed, service animal husbandry

The feed formula of aquatic extruded feed should be designed according to the nutritional needs of aquatic animal species combined with the characteristics of puffing. It should ensure that there is a higher amount of starch raw materials in the raw material ratio. The additives should be resistant to high temperature, especially vitamins should be resistant. High temperature varieties or increase their dosage. fPD China Feed Industry Information Network - based on feed, serving animal husbandry

2 production process fPD China feed industry information network - based on feed, service animal husbandry

The production process of the aquatic expanded puffed feed is: a fine pulverization of the ingredients, a mixing, a water addition, a puffing granulation, a cooling, drying, and packaging. The pulverized particle size of the raw material should be below 0.5mm, which is beneficial to both puffing and granulating, and can improve the utilization of nutrients in the raw materials. Adding water is a key step, and the water content of the raw materials should be controlled between 23% and 30%. The moisture is too low, it is difficult to puff, and it is easy to block. If the moisture is too high, the expansion may be insufficient, which may affect the molding. The expansion and granulation generally adopts a wet extrusion extruder, and the raw materials are squeezed and pushed by the spiral in the extruder. At high temperature and high pressure, the temperature and pressure drop sharply at the moment of passing through the die hole, so that the moisture in the raw material evaporates rapidly, the volume expands, the specific gravity becomes light, and it is cut and formed through the slit of the material port, and then cooled and dried to room temperature and moisture. % below package. fPD China Feed Industry Information Network - based on feed, serving animal husbandry

3 factors affecting the expansion of fPD China feed industry information network - based on feed, service animal husbandry

The ratio of raw materials, the starch content and moisture content of the raw materials, the expansion temperature and pressure, and the rotation speed of the extruder all affect the quality of the puffing, especially the starch content and moisture content of the raw materials and the expansion temperature. These factors should be comprehensively adjusted to produce a higher quality aquaculture puffed floating feed. fPD China Feed Industry Information Network - based on feed, serving animal husbandry