http://www.nwinfo.net/~milkmaid/
Try this link, it's a wonderful one on tube feeding, ligiments and also on alfalfa pellet feeding. It's what I do. I don't want to sit around breaking up cubes, and know if I put them out whole they play with them

But the alfalfa pellets work wonderful, the only grain I feed is on the milkstand.
The long stem fiber information......if you ever get the chance to butcher one of your animals, open it's rumen. Notice the length of fiber in the rumen and cud, it is like 1/4 inch grass clippings, a bright green, and it looks exactly like alfalfa pellets! I do feed a nice clean grass hay during the winter, which is mostly eaten when the girls can't get out into the woods to eat. My girls eat between 2 and 4 pounds each of the pellets, kept out 24/7 with their minerals. When I do dry the does up in December they will get 2 pounds each once a day, plus grass hay if they want it (last year I didn't even go through one 50 pound bale a week with 25 goats), since they came out of kidding a little heavier than I wanted.
Make any changes slowly. Vicki