My 22 y/o Haflinger, who has always been a bit of a chunk has lost quite a bit of weight and muscle since the spring. Vet wasn’t too concerned in May, as he is older, and his teeth looked ok. Dentist will be out in September/October for a float. He is fed hay 3x a day, and lives outside 24/7, with a sparse lot. He has been upped to a light portion of grain 2x a day (currently Purina WellSolve Weight Control at prot 12%, fiber 26%, fat 1% and Poulin Balancer at prot 24% fiber 11% and fat 3%) and still has not gained much weight. Normally he would be exploding on just a handful of grain, and I know he is a founder risk, so I avoid high NSC
Pony is not in hard work- several times a week for 30 min, mostly walk and trot. He did spend several months this summer out with a young horse, who was more active than his normal pasture mate.
Barn Manager has been encouraging me to try Renew Gold, and says she feeds her laminitic pony it with no worries. But I don’t believe he needs a 15% fat supplement. Looking for other recommendations for what you have done to help build up your senior horses.