I just got goats so may not be of much help.
Mine eat a mix of alphalfa, Noble Goat feed, and corn. I mix it up this was to get them to eat the alphalfa.
Otherwise they don't eat it. Rufus was raised on a high grain diet of commercial feed mixed with corn. When I got him home he did not want anything to do with the alphalfa. Bella came from some folks at the last trade day and is very shy due to not being handled and she has been a nervous eater.
So I am bribing them to a healthier diet as I am slowly weaning down the amount of grain feed as I been reading that they should have 3 parts grassy hay(alphalfa) to 1 part grain. I also have some regular hay in a hanging feeder for them and I cut weeds, tree limbs, and bushes to give to them.
They are used to the new feed schedule now ( I feed them in the morning and evening by splitting their rations) and have feeled out nicely.