Micronization is a process of heat treatment of grains using infrared radiation followed immediately by processing in an extruding-type roller mill. A laboratory model Pierce micronizer was used to process sorghum under three different temperatures: 102", 250", and 282°C. Sorghum processed at 250" had the highest starch availability value followed by sorghum processed at 282"C, sorghum processed at 102", and raw sorghum. The extent of protein solubility was in decreasing order: raw, processed at 102", processed at 250°, and processed at 28P . Increasing the temperature of the process destroyed more Qsine. Animal study showed that a diet containing 15% protein from sorghum micronized at 256) and casein had a higher growth response than the diets containing raw sorghum or sorghums micronized at 102" or 282" C.