It really depends on each farm- there’s no clear answer. But chickens, for example, eat a lot of grain- even free-range, pasture-happy chickens eat a lot of grain. The spent grains from beer companies are perfectly in line with their diet. A wise farmer will let the chickens roam around daily, despite having this free grain, so that the chickens can vary their diet with grubs and such from the field. So, like anything else, a farmer who keeps their animals inside and feeds them 100% beer scraps isn’t going to do anyone much good- but this issue really has nothing to do with that. The FDA is laying the groundwork to fuck with something that works well. As usual.
People can and should comment here before March 31:
http://www.regulations.gov/#!submitComment;D=FDA-2011-N-0922-0019
