水产动物微粒饲料制备方法的研究

A study on preparation of micro-diets for aquatic animal

采用喷雾、粘合破碎、相分离—复凝聚和蛋白交联４种方法，制备出４种类型的沉性微粒饲料（粒径５０～５００μｍ），并对其性能进行了比较。从结果看，蛋白交联法制备的微粒饲料性能最好，为白色圆球形微粒，在水中不膨胀，沉降速度为７．０ｍｍ／ｓ，分散性和抗水性能都很好，成膜率为９９％，２４ｈ溶出率为０．４０６％，致腐时间为７２ｈ。

Four types of precipitable micro-diets for aguatic animal were developed with spraying method, sticky cracking method, phase separation re-coacervation method and protein cross-linkage method (diameters between 50 500 m),and a comparison was made whin their physical and chemical properties.It was found that the micro-diet prepared with protein cross-linkage method is the best among the 4.This type of micro-diet,with white color and spherical shape, has very good properties in dispersion and precipitation (7 mm/s) without expansion in water. Also,it can be maintained in water for 96 h without breaking up.The loss rate is 0.406% in 24 h;the capsulated rate is 99% and the decomposition time is 72 h.