I think they need a good vitamin/mineral supplement, as we feed a lot of grass hays in our area & a little alfalfa. I like Dynamite. I have seen tremendous stamina & hoof growth on this product. I also like MSM or Glucosamine. I take these things myself even though I don't eat a lot of grass hay ! Let's face it- our farmlands have been overused and are somewhat depleted ! - Heidi Helly
