This method, a straightforward tool for balancing rations, uses a square grid to calculate the proportions of two feed ingredients needed to achieve a desired nutrient concentration. For instance, if a target protein percentage lies between the protein content of corn and soybean meal, the square helps determine the precise ratio of each ingredient to reach that target.
Its simplicity makes it a valuable tool for quick calculations, particularly in situations where access to sophisticated software is limited. Developed by Henry Pearson in the early 20th century, this approach remains relevant due to its ease of use and applicability in diverse agricultural settings. It provides a fundamental understanding of nutrient balancing principles and serves as a practical method for formulating feed rations for various livestock.
