Full proceedings at: http://www.extension.org/72746 The livestock sector is one of main drivers of the environmental footprint. Animal feed is a key to sustainable meat production. Researchers are looking for environmentally sustainable feeding strategies that will lower diet cost, agricultural use of land, water depletion, and climate change impact. We used linear models to formulate 4 single-objective diets including least-cost, least-land use, least-water depletion, and least-climate change impact diets. Preliminary results showed that the use of wheat and wheat middlings hold potential to reduce pig diet cost and the environmental footprint.