Fig. 2: Feed use material flows in the global food system (dry matter weight).
From: Food system by-products upcycled in livestock and aquaculture feeds can increase global food supply
a, All feed flows. b, Flows for only food-competing feedstuff. The percentages refer to the shares of the feed use categories (on the left) and the shares of the feed use in specific animal production groups (on the right) of the total global feed use. The feedstuffs included in each category are described in Supplementary Tables 3 and 4. The data sources used are given in Methods. Material flows in terms of protein content are shown in Extended Data Fig. 1.
