Gypsy, the Equine Encyclopedia, has something to say about how much of his body weight a horse needs in food per day. Like all shetlands, she is always watching, listening and eating.
The average equine needs a total of 2% of his body weight in food per day. Ideally, half of that (1%) should be in forage (hay or grass). Grain should be no more than 40% of a horse’s daily feed.
Ponies, however, think they should be fed 100% of their body weight in food per day.