Cereal grains typically are processed before they are
mixed into diets for both ruminants and monogastric
animals (Svihus et al. 2005). This processing very often
involves grinding through a hammer mill or roller mill to
break the intact kernel and reduce particle size (Amerah et
al., 2007). This reduction in size is important to increase
the surface area for improving the rate of fermentation and
digestion, decrease segregation and mixing problems, and
to facilitate further processes such as pelleting (Behnke,