I sprout whole grains as fodder for my pigs and chickens and they LOVE it. I harvest my sprouts when they are about an inch above root level, Some people wait until they are several inches longer. I would say that I get at least 150lbs of sprouted fodder from 50lbs of grain. This makes up about a third of their overall feed during the winter when there isn't much to be grazed. Barley is best, but hard to find so I have been using feed-wheat with good success. Black oil sunflower seeds also make great sprouts, but it is hard to find them for a decent price without being full of stemmy (spellcheck is telling me that this is not a word
..) bits which then turn to mush and promote mildew. A lot of folks say that their hogs do well on hay. I don't have any experience with this but you can always try it out. I imagine you would want a softer leafy hay as oppose to a thick stemmy hay since they are not ruminants.