As a consequence, consumptions of raw materials for whole French compound feed production change drastically, through the use of rapeseed meals, over soybean meals (−425 000 t amino acids manufacturer for nutraceuticals CP-2) and sunflower meals, and including extra grains, with maize changing wheat. Raw materials consumptions at regional scales are calculated from regional incorporation charges and regional feed tonnages. The incorporation rates of every uncooked material in feed are defined by linear programming (simplex algorithm). It focuses on adoption charges in numerous areas based mostly on penetration. The financial cost, measured in euros (€) or in euros per tons of feed (€/t), is calculated in the model as a mixture of incorporation rates and uncooked material prices. This model evaluates the relative competitiveness of raw materials. Several financial and environmental indicators may be calculated from raw material inclusion levels proposed by the model.
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