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JunAquaculture develops rapidly due to the growing consumer demand for fish from consumers around the world, wild fishing cannot meet this demand and in response. During this period, fish powder and fish oil from unused wild fishing was not sufficient to be the only feed source for fish such as salmon, trout, shrimp, bass, sea bass and snapper, only mentioned species and over the past decade developed plant protein and oil containing fish feed preparations as a supplement to fish powder and fish oil. The most popular plant protein source as a fish powder alternative in these preparations is selected from soy flour, soy protein concentrate, corn gluten, pea gluten, and active wheat gluten (vital wheat gluten) These modern fish feed diets are often prepared in granular form. These particles are prepared by first grinding and mixing them with adhesives such as fish flour, plant protein, and adhesives such as wheat flour. Water is then added and the resulting paste is extruded, the resulting particles having a size controlled by the mold of the extruder. The particles are then dried and the oil added. Adjust parameters such as temperature and pressure to enable manufacturers to make particles suitable for different fish breeding methods, such as feed that can either float or slowly sink. In plant proteins used as a fish meal substitute, active wheat gluten is considered an important source of protein and acts as a particle adhesive.
A study was shown that active wheat gluten supports rapid growth in Atlantic salmon and was easy to digest and did not reduce the rate of digestion or utilization of its fat or energy of essential elements. Thus the crude protein of up to 50% of the fish powder is replaced with the crude protein of the wheat gluten. The study also showed that active wheat gluten at up to 35% of dietary protein did not cause intestinal epithelial pathology. The effect of adding wheat gluten on grain morphology and physical and functional properties was studied by draganovic and reported in aquaculture nutrition Volume 19, Issue 6, pages 845 - 859, December 2013. Under the conditions used in these experiments, active wheat gluten is added to the fish feed particles, showing a decrease of oil immersion and oil absorption during coating, but producing strong, highly porous particles. Technical realization elements: Based on the above study, a new type is proposed in the present invention.