Originally Posted by farlo4
2. Rice Bran or Wheat Bran: This is what did it for my Duke. ....
3. Alfalfa hay: Even if your horse needs some grass, you should still add alfalfa to the diet. Hard-keeper horses just can't get enough out of the grass to add weight. My TB has to be on straight Alfalfa or he gets too skinny, but plenty of horses can go with a mix.
Sorry to pick farlo, but as you're advising someone what 'should' be fed & these 2 points above rang alarm bells, thought I'd elaborate...
Rice bran is generally thought to be a good additive, but wheat, with the ultra high phosphorus should NOT be fed IMO, unless you're balancing a deficiency/calcuim overdose.
Alfalfa/lucerne is generally a pretty good feed for horses **as PART of a balanced diet**. It is very high in protein, which can be problematic for a lot of horses though. Also calcium & some other nutrients are quite high, so it's important to carefully balance nutrition & supplements based on what's in it. Horses should NOT be fed solely on alfalfa IMO & generally it shouldn't be more than around 1/3 of the forage ration, unless under vet's & nutritionist's supervision.