Microencapsulated feed for Silurus lanzhouensis larvae and juveniles and preparation method of microencapsulated feed

Microencapsulated feed for Silurus lanzhouensis larvae and juveniles is prepared from a premixed powdery core material, a wall material and a surfactant, wherein the premixed powdery core material isprepared from 44-46 parts by weight of fish meal, 34-36 parts by weight of extruded soybean powder, 18 parts by weight of microalgae powder, 1.5 parts by weight of calcium propionate and 0.5-1 part byweight of a thermophilic protease preparation; the wall material is prepared from 260 parts by weight of starch octenylsuccinate, 2000-2300 parts by weight of water and 150-160 parts by weight of anegg white liquid; the surfactant is prepared from 7.5 parts by weight of Span 80, 10 parts by weight of soybean lecithin and 6-8 parts by weight of Tween 80. The invention further provides a preparation method of the microencapsulated feed for the Silurus lanzhouensis larvae and juveniles. By means of compatibility of the microencapsulated feed for the Silurus lanzhouensis larvae and juveniles, uncertain reactions are avoid