The expansion feed has several advantages over the powder and extruded pellet feeds:

A.It is stable in water, stay intact for long durations；
B.Starch component is small, leaving room for adding other components and ingredients；
C.Adhesive agent is not necessary；
D.Pasted starch facilitates digestion and absorptionb by aquatic animals；
E.With the ENZYEN destroyed, the feeds is not as easy becoming sour；
F.The transformation of carbohydrate helps to increase the amounts of fat and grease.