2. Label feeds and crude protein percentages on the left corners and feeds on right corners.

3. Subtract the smaller number from the larger along the diagonal lines.

4. Divide the parts of feed by the total parts to find the percent of each feed in the ration.

5. Use total pounds needed to determine the pounds of each feed need.

6. Check to make sure the protein number at the end fits with the number of crude protein in the middle of the square.Example:<br />You need 1200 lbs of a 25% crude protein (CP) hog feed. You want to mix soybean meal (50% CP) and corn (10% CP) to make your feed ration.<br /> 50% CP Soybean meal15 parts soybean meal<br />25% Crude Protein<br /> 10% CP Corn25 parts Corn<br />40 whole<br />37.5 % Soybean Meal 15 parts/40 whole x 100%= 37.5%<br />62.5% Corn25 parts/40 whole x 100%= 62.5%<br />450 lbs. Soybean Meal 37.5% X 1200 lbs. = 450 lbs.<br />750 lbs. Corn 62.5% x 1200 lbs. = 750 lbs.<br />Double Check<br />225 lbs. CP in Soybean Meal 450 lbs. x 50% CP = 225 lbs. CP<br />75 lbs. CP in Corn750 lbs. x 10% CP = 75 lbs. CP<br />300 total lbs. CP in ration 225 lbs. + 75 lbs. = 300 lbs.<br />25% protein in finished mix300 lbs. / 1200 lbs. = 25%<br />