I've been having this challenge the last few years. I've tried to limit their grazing time by keeping them in a dry lot, letting them out in the pasture at night.
Recently I've begun to question whether I should delete the supplement. They get a rounded teaspoon of pelleted supplement, designed to compliment pasture forage. Also they get 1/8 cup boss and 1/2 cup oat groats. (This works to give my older boy the joint supplement) I can't imagine the small amount of supplement causing the problem, but I'm ready to consider it. I've been using the same feed regimen for about 10 years. A few hoof issues during that time, but the separation is mainly in the last two or three years.
No laminitis issues, just the separation. They are trimmed every 4 weeks.
Recently I've begun to question whether I should delete the supplement. They get a rounded teaspoon of pelleted supplement, designed to compliment pasture forage. Also they get 1/8 cup boss and 1/2 cup oat groats. (This works to give my older boy the joint supplement) I can't imagine the small amount of supplement causing the problem, but I'm ready to consider it. I've been using the same feed regimen for about 10 years. A few hoof issues during that time, but the separation is mainly in the last two or three years.
No laminitis issues, just the separation. They are trimmed every 4 weeks.