Hello Carole,
I can't help much on the feeding , apart from it is a grain and I would suspect you would use it in similar quantities to barley or oats . I would try that for a bit and then just add or subtract as need be. As to drunk pigs...lol... I don't drink or make my own beer, but when they make beer they use malted barley , which is barley germinated to a certain point , that is then mashed 'fermented' ( I think I am about right on this?) and then taken through the rest of the process to reach the final product 'Beer' . So as long as you don't germinate and roast, ( malt ) the grain ,and then mash it ( ferment ) you should be ok . Hope that helps ..
cheers
Russ