Cattle do eat grains as a supplement to grazing, a drought ration, or in lot feeding. And since lands with grass is limited by space, and seasonality, we also

Cattle do eat grains as a supplement to grazing, a drought ration, or in lot feeding. And since lands with grass is limited by space, and seasonality, we also do grow a lot of food for them. E.G: UK stats for 2015/16 of soy imports (3.1 million tonnes) break down: - 1.1 million tonnes for livestock - 1.42 million tones for human food - 0.58 for non-foo products That 35% of the imported soy, just for the livestock food.