We have an old mare (24) who has recently begun stocking up. She is on 24/7 turnout and is currently at a good weight (came through the winter thinner than I'd like, but the vet only wanted her to gain around 40 lbs, which she has and then some, but not what I'd consider overweight). She has started stocking up in her hind legs within the last week. Her rider had not ridden her for 2 weeks due to trying to meet graduation requirements (no excuse, I know, but this is where we are now.) We've been hosing, riding, then hosing again, and they look ok when we are done, but by the next afternoon are stocked up again, though not as bad as before. Is there something we could be doing to help her? She doesn't seem to be in pain, and is sound, but this is distressing for both me, and her rider. We've owned her for 3.5 years and the only time she has stocked up on us before was when she was in a stall for 18 hours with no exercise. Nothing has changed from her day to day routine except for the lack of riding for the last two weeks.
Is this something that could resolve on its own with regular enforced exercise (eg. Riding), or do I need to get the vet out? He was out at the end of Feb to check her over and float her teeth and she was good then, though a little underweight. I would love to hear some constructive advice and opionions.