Just for the sake of clarification... I'm thinking about milking does in particular. From what I've read it sounds like non milkers don't need an "extras". Feel free to correct me if I'm wrong.

I also read the post on feeding no grain and still having a good milk supply - that sounds great! I just don't have a clue where to begin there... We've been having fencing issues and the goats (at this point) can't live in the woods. We do cut branches and bring them fresh food on rainy days or when we are having fencing troubles.
I've been mixing my own grain and sprouting it (Wheat, Barley, Oats, Peas, Black Oil Sunflower Seeds) and adding a top dressing of alfalfa and
flax. I don't let it sprout a long time - as in looking like grass. You can just see the little sprouts peeking out.
Does anyone here do this? What is your favorite grain mix? Do you notice a difference in milk production and/or goat health with the various grains? I found the info here and that's what got me started thinking this direction
http://www.landofhavilahfarm.com/loh-feed-regimen.htm, but would like more feedback on it to make sure I'm not barking up the wrong tree!
The only difference in milk supply that I've noticed so far has more to do with whether or not the goats have been out in the woods.