My friends old horse (35), has very few teeth and is struggling to eat hay/hayledge, he will not eat alpha a/hi fi as a hay replacer. What else can she give him? (He is still managing to eat his hard feed).
You could try Spillers Happy Hoof (which is softer than Alfa A or HiFi) or if that is still too difficult for him to chew then try a soaked fibre feed - something like AlfaBeet or soaked High Fibre cubes.