Alright, here's the deal. I have a 14.3 hand arabian that lives out in a pasture 24/7 with another horse up here in Michigan. Here's the problem. We've had a really wet, mild summer so the grass has stayed lush and green and consequently Rocky has been enjoying said grass and packing on the pounds. He gets no hay and only a handful of grain twice a day (i wouldnt give him any but its necessary to keep him from stealing his pasture mate's grain). I ride him 3 days a week, flatwork for about 30 minutes and then occasionally he will get lunged on a fourth day of the week. He gets the other 3 days of the week off.
I'm at my wits end here. He's still fat and I don't know what to do short of put a grazing muzzle on him. He can't go inside (he hates being stalled and will climb the walls and work himself up if kept in for long periods of time). Do you guys have any suggestions, maybe some great fat burning exercises for horses or something? Or do you think its time I put a grazing muzzle on him? I'd like to aviod that but at this point I don't want him getting any fatter and my riding seems to do nothing to that grass belly. Thanks in advance for any help =)