Assessing the Environmental Footprint of Distiller-Dried Grains with Soluble Diet as a Substitute for Standard Corn–Soybean for Swine Production in the United States of America

The swine diet formulation in the United States of America (U.S.A.) is entering a new era decision making to promote low-carbon pork production systems. As part decision-making process, precision nutrition approaches customize and alternative feeding options that are economically viable environmentally sustainable given priority. Hence, objective this study identify an over standard corn–soybean meal diet. byproducts from supply chain human food biofuels, i.e., distiller-dried grain with solubles (DDGS), chosen as option formulate First, two byproduct diets low high DDGS inclusion (10.1% 28.8%, respectively) were formulated using least-cost technique. Second, life cycle inventory was created, followed by data collection key sources, including DATA SMART-2017, USDA, RIA-GREET 2018, relevant literature. Third, SimaPro 8.5.2.0 (PRé Sustainability: LE Amersfoort, Netherlands), ReCiPe 2016, midpoint method economic allocation used investigate environmental footprint inform sustainability decisions swine-farm managers. considered functional unit ‘lb diet’, system boundary farm gate considers only feed stage. observed results include global warming potential, land use, water consumption, fossil resources scarcity, terrestrial ecotoxicity. comparative 28.8% for displacement ratio 0.69 show approximate potential saving 0.04 kg CO2 eq. per lb at Moreover, does not significantly impact consumption resources; however, it can reduce use 26% ecotoxicity 8% compared Overall, quantified indicate footprints lower than