If you are going to graze stalks, milo is the only way to go.
Corn stalks can vary greatly from field to field. If the corn stalks you are grazing (or are attempting to graze) happen to be Bt corn, you may as well haul the cows to your nearest WalMart parking lot and turn them out. They will get as much nutritional value out of asphalt as they will grazing Bt corn stalks.
I have seen this problem only get worse over the last 10 years. If you are looking to rent corn stalks, please, find out if the corn was Bt. If it is, save your rent and fuel and buy straw.
I cover a territory from the south side of the Platte River at Grand Island, NE, to Osborne county, Kansas, and it's the same sad story wherever you go. The cattle are never satisfied grazing Bt corn stalks, but there are hardly ever any problems with the milo stalks. :wink: