It's pretty common around here for farmers to "chop" the hay, especially first cutting, and feed it directly to the cattle. Later on, it gets put into either bunker siloes or on ground plastic tube siloes about 10 or 12 feet in diameter. There is a special machine that stuffs the tube like making sausage except the machine moves and the tube just grows along the ground 'til they start another one. Much cheaper than vertical siloes and you don't need to worry about the silo unloader breaking down, someone working in the thing getting killed by silo gas, someone drowning in the silo, etc.
I do something similar when I mow the lawn and bag the clippings for the sheep to eat, but on a "slightly" smaller scale.