I mean if we wanted to make beef production more sustainable we easily could, feed cows more grass and less grain. But grain is more often the choice because yo

I mean if we wanted to make beef production more sustainable we easily could, feed cows more grass and less grain. But grain is more often the choice because you can grow/fatten your animals up like 20% faster than with a pure grass diet and the grain is easier and more compact to store and ship. Alfalfa requires no additional fertilizer and actually sequesters nitrogen into the soil, reducing the need for artificial fertilizer derived from fossil fuels.