My question, for my own education is this: I have also noticed that since his last trim, the sole/toe callus on his rear feet has gotten much more pronounced. He has also stopped chipping entirely, which was an issue we had. Could it be that he's finally finished growing out his 'old hoof' from when he wasn't on the best diet? The changes appears so suddenly and the chipping stopped simultaneously. I am not sure what to make of it. Ideas?
I would be pleased because it seems like these changes would be a good thing, but for his ongoing soreness over gravel. There is flaring that actually created a noticiable difference in hoof wall angle that has been growing down since I got him, the bend/angle should actually finally trim off in the next cycle.
He is unlikely to be laminitic. Aside from his grass-hay and ration balancer only diet, he doesn't show any indications of IR or cushings issues, or lameness any time other than over gravel. I have not put hoof testers to him though. I can get pictures tomorrow, but curiosity got the better of me this evening.