In 1969, formula feed manufacturers utilized 23.1 percent of all the feed grains and wheat fed to livestock. Estimates of aggregate demand by the mixed feed ind.:-stry for corn, oats, barley, grain sorghum, and wheat are presented. As expected, all of the feed grains have elastic demands. Grain sorghum has the highest direct price elasticity (-5.42), followed by corn (-4.81), oats (-3.82), and barley (-2.75). The direct price elasticity of wheat is elltimated to be -0.85. The location of feed manufacturers is found to play an important role in the demand for feed ingredients.