Easily researched? Imports and exports are usually compared in terms of € or USD and sure, if you process feed into meat you will make a surplus or you wouldn't

Easily researched? Imports and exports are usually compared in terms of € or USD and sure, if you process feed into meat you will make a surplus or you wouldn't do it. But for agriculture, a more fitting unit would be the nitrogen involved, and I'm pretty sure that imports greatly outweigh what's exported in food.