I have had only had my new horse for a month and I have found that he virtually eats NO hay . He may just pick little stalks out of his hay . He eats under half a biscuit a day if I'm lucky. I'm using new season oaten hay and I have tried from different supplies , with no luck . I know he needs fibre, so to compensate he is getting 8 scoops of chaff a day with his hard feed . To me though, that's not enough. He is a big boy who needs to gain some weight ( ex racer) . He is currently fed soaked lupins , cracked lupins ,chaff, Lucerne chaff and coprice. Along with marshmallow root (for ulcers) , celery seeds and a vit/min supp. I'm wanting to add more fibre and I'm open to suggestions . I have tried maxisoy and speedi beet but he wouldn't have a bar of that . He teeth are being done today and my next line of attack is wheaten or meadow hay . Any helpful advice ?