Large yellow croaker is a valuable economic fish in China. With the success of artificial rearing this year, the breeding technology has become more mature. Feeding with small trash fish, the residual baits cause serious pollution to the cultured sea area, the fish disease is harmful, and the survival rate of the culture is low. Wet pellet feed is made from fresh or frozen small junk fish and powdered feed with specific nutrients, mixed and extruded. It can synthesize the advantages of fresh fish, shrimp and hard pellet feed, suitable for large yellow croaker. The feeding behavior of carnivorous fish is good and its palatability is good. When feeding wet pellets, the foraging rate of fish can reach 80~90%, and the amount of residual bait is only 1/4~1/6 of the feeding bait. Significantly reduce the residual bait pollution of the water quality of the sea area. Put the juvenile and adult fish of large yellow croaker into the cages. The water depth of the sea area is 15-20 meters, the water temperature is 11-23°C, the pH value is 7.8-8.2, and the dissolved oxygen value is greater than 5.0. The feed dry powder has a fineness of 80 mesh. The main raw materials are: fish meal, yeast, starch, soybean meal, multivitamins, minerals, lures, growth promoters, colorants, etc. The values ​​of the nutrient components are shown in Table 8 - 3. Raw bait (small fish) is mainly frozen carp. Table 8-3 Feed nutrient (%) Feed moisture crude protein crude fat crude fiber coarse gray dry powder Small fish mixed wet pellets 6.6367.2038.9053.2818.2431.276.3011.0013.801.80 – 13.60 - The wet pellets are 1:1 ratio of small trash fish and dry powder, plus 3.5% of Fish Oil and a small amount Water, stirring and mixing, then extruding with soft granule machine. The raw bait is thawed and then lumped into chunks, crushed with a meat grinder and sprinkled. The wet granule feed is made once every 2 to 3 days. The adult fish group casts every day. Feed 2 times, juvenile fish composition in 1 to 98 days did not feed 2 times a day, then once a day.
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