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Mean feed-crop requirements for each animal protein production scenario. Total average (±SD) global feed-crop equivalence (tonnes) for each (A) crop type and (B) animal group for the four scenarios: current (baseline), business-as-usual (BAU) 2050, proportional substitution of 2050 meat production with mixed (freshwater and marine) aquaculture, and meat substitution from primarily marine sources. fw, freshwater.
