his teeth were done about four months ago,so I seriously doubt that is his issue. He is getting fed twice daily and is getting approx. 4lbs per feeding as I was instructed by a purina spokesperson.However i am looking to switch him to something else maybe better suited for him. The fescue that I am feeding (and it is free choice)is always the same as I have bought my hay from this same man who cuts it here for five years, so the hay is good and he is a biology teacher and ffa too So I am sure he does everything properly for good nutrition. I usually worm about every two months. I have heard that sometimes the ottb should be given the daily continuous wormer but I am afraid of that as I have no experience with the stuff Anyone else have any thoughts on this BTW this is a gelding not a stallion or pregnant mare as I am aware of not feeding fescue in the last trimester.