This is my question about horses who get hyped up on alfalfa or other feed (not sugar). I wonder if perhaps the “hotness” is the horse feeling good enough to act his normal self rather than it changing him from a normally calm horse into a neurotic one, as people seem to think. I’ve never personally seen a horse get “hot” on alfalfa or grain, but that doesn’t mean I disbelieve others who have. My horses are out 24/7, so perhaps I’d notice a difference if they were stalled or if their herd behavior went from easy-going to mean. I’d definitely notice that. Under saddle, I like the horse to have enough energy to do what I ask rather than hanging back. Feed proportions get adjusted accordingly.
I wish I’d known about rice bran pellets when I had my hard-keeper OTTB. He did much better on low-carb feed than on sweet feed, but I still couldn’t put a finish on him. I think rice bran would have helped.