The only thing I have noticed with feeding alfalfa cubes is that they eat it really fast and have nothing left after their rations done. With hay it takes more work to chew/eat it making it last longer, and since horses want and should graze all day, then the processed pellets go down really quick leaving nothing left to chew on. I'm not saying your aren't nutritionally giving your horse the same as a flake of alafalfa, but it just is gone in a second. Could you switch to hay or possibly A+M which contains more to chew on. If you don't agree with giving molasses mixed in or can't get straight alfalfa hay then by all means, alfalfa pellets are fine. I'm just saying the things that I noticed when we were stuck feeding hay cubes, It's like chinese food, they are hungry an hour later.
Troubled TB ~"A thorn by any other name will prick just as deep." @-'--,---