Utilization of protein‐rich ethanol co‐products from corn in tilapia feed

Corn distiller’s grains with solubles (CDGS), which is the residue from ethanol fermentation of corn, were incorporated in tilapia (a warm‐water fish) diets that contained either 36% protein without fish meal or 32% protein with and without fish meal. A 103‐day feeding study indicated that the three diets containing CDGS resulted in higher weights of tilapia than fish fed a commercial fish feed containing 36% protein and fish meal. The difference in weight gains between 32 and 36% protein diets was not significant. Incorporating fish meal (6%) in diet had no advantage over a diet without fish meal.