Given the following lactating cow ration and ingredient percentages on a DMB, what are the as fed ration percentages of the ingredients? Ingredient Grass Hay Barley Protein Supplement TOTAL Ration %, DMB 82 12 6 DM Content %, How much barley (lbs/head/day)? 88 92 82 Ingredient %. As Fed Ration% As Fed If the cows weigh 1230 pounds and should consume 2.2% of their body weight in DM, how much of the supplement (as fed weight) will you want them to consume (lbs/head/day)?