Yea its food crops only. Also it is eonomic output too, rather than land area. But I guess it does show more or less the extent of the feed production.
Most of the animal feed in Europe is actually grown in the US and South america. Like Finley was saying earlier that leads to the opening up of nutrient cycles - poop doesn't go back to the soil - it just leads to eutrophication instead and depletes the soil while simultaneously killing aquatic life: gulf of mexico dead zone. Originally those animals would have been mostly grazing, not eating mostly arble crops. A big fraction of the fish catch is also fed to animals. and corn, and the corn makes the cows fart second biggest cause of climate change.