My five year old gelding had this problem as well. Once I ruled
out worms I tired many of the things you mentioned in your post.
Nothing worked. My vet had mentioned that the problem could be
sand. I really did not think much of it because the fecal did not
show any signs of sand and I have a nice coastal pasture. I had nothing to
lose and everything to gain so I gave it a try. My Vet suggested I
give him 1 oz of Metamucil every day, the first week of the month. ( I
actually use equate fiber therapy which has 100 % Natural Psyllium, you can
buy it at Walmart much cheaper ) I feed wet so I just mix it
into his feed. Everything went back to normal and has been so for
over one year. I hope you solution is that
simple.
