Sure I'll tell yall what I know, which isn't much. I've seen 3 horses with it. Looks like the hoof has been melted. Like you put it in a fire and it melted like plastic. It looks a little like founder, but the hoof wall sinks in instead of separating. Well, some separation, but not much. The sole drops like a laminitic horse. All cases I saw had severe cracks also, which soon became infested with white line disease.
There was no common denominator with the horses I saw affected, except I remember one of them had just been brought in from Oklahoma. Maybe more selenium in the hay/grass caused a shock to it's system. In all cases there were at least 5 other horses on the farm that weren't affected. Selenium is a required in small amounts, but an overdose causes problems. It's supposedly more common in young horses, but all the ones I saw were mature.
It's a good idea to have the soil checked by USDA/NRCS for toxidity
Last edited by AmazinCaucasian; 08-07-2012 at 02:59 AM.