We are getting two adult wethers (1.5-2 yrs old) that have been fed soaked beet pulp by the previous owners each day instead of grain. Is this a better option than grain? I'm also not sure if we switch them to grain right away if it will be a shock to their system. We have only fed bottle babies up to this point, but are waiting for the book "Diet for wethers" to arrive. I would like to hear any opinions or experiences with this, thanks!