My 17 hand Holsteiner has always ben a hard keeper. Often up to 8 pounds a day of concentrate, a mash and regular hay. Well I moved to a barn who had a ton of alfalfa and no one used it (the show horses left) so we started my guy on it. He has been on alfalfa for a couple of years but only 1-2 flakes a day. Well we upped him slowly to 7-8 flakes a day of better quality alfalfa than I had . We had also been fighting ulcers so started omeprazole, Outlast and started upping the alfalfa. He was also on Enrich 32 and Ultium. After a week of increased alfalfa he is starting to fill out, so much so we stopped the grain.
I posted his pic on FB and was surprised how many came back and said they did the same thing and it was a miracle. Instead of it making him hotter, he is actually calmer. He has good turnout, often 24 hours as long as the weather is decent and he has a round bale to eat in between feedings. Super happy so far!