Prepare a broiler starter ration containing 22% Crude Protein (CP) by mixing Maize (CP=9%) and De-hulled Soybean meal (CP=45%) using the Pearson Square Method.

To prepare a broiler starter ration containing 22% Crude Protein (CP) using Maize (CP=9%) and De-hulled Soybean Meal (CP=45%), we can use the Pearson Square Method to determine the appropriate proportions of each ingredient.

The Pearson Square Method involves creating a square with the desired CP concentration in the middle, and the CP concentrations of the two ingredients on the opposite corners. The difference between the desired CP concentration and the CP concentration of each ingredient represents the proportion of each ingredient needed in the final mix.

Let's calculate:

Step 1: Determine the difference between the desired CP concentration (22%) and the CP concentration of each ingredient:

• For Maize: 22% – 9% = 13%
• For De-hulled Soybean Meal: 45% – 22% = 23%

Step 2: Create the Pearson Square:

         Maize (9%) | Desired CP (22%) | De-hulled Soybean Meal (45%)
         -----------------------------------------------------------
         |                  |                    |
         |                  |                    |
         -----------------------------------------------------------
          (13%)            (23%)

Step 3: Calculate the proportions of each ingredient:

• Maize: (23% / (13% + 23%)) 100 = (23 / 36) 100 ≈ 63.89%
• De-hulled Soybean Meal: (13% / (13% + 23%)) 100 = (13 / 36) 100 ≈ 36.11%

Step 4: Convert the proportions to weights based on the total weight of the ration (e.g., 100 kg):

• Maize: 63.89% of 100 kg = 63.89 kg
• De-hulled Soybean Meal: 36.11% of 100 kg = 36.11 kg

So, the broiler starter ration containing 22% Crude Protein (CP) can be prepared by mixing approximately 63.89 kg of Maize and 36.11 kg of De-hulled Soybean Meal in every 100 kg of the ration.