Extruded high soluble protein animal feed and method of preparing same

摘要

An extrusion process for the production of animal feeds having high soluble protein contents is provided wherein respective starch-bearing and proteinaceous ingredient fractions are differentially processed so as to obtain an extruded final product containing soluble protein. In the process, a starch-bearing fraction is preferably preconditioned and introduced into an extruder; a proteinaceous fraction is introduced into the extruder barrel, preferably adjacent the extrusion die, for mixture and extrusion with the starch-bearing fraction. This yields an extruded feed having a starchy matrix with protein of high solubility carried by the matrix.