There is a winter barley I believe, but I've never done anything with it. A lot of that kind of stuff only works in warmer zones. The Green Cover guys had some stuff that was supposed to winter kill that came back this year, I think maybe black oats.
I use barley in the spring where winter cereals can't survive standing water from snow melt. This year, I am going to try to grow a second crop of barley right after the first crop, simply for the straw, with the seed heads as a secondary food objective. I think I've got the timing nailed down to about a two week window where the seeds heads from the spring crop will be consumed by deer around the end of July or early August, and I can then mow and start a second crop and get it to lignify before the heat goes away.