I have a 19 year old chesnut pony. I've had him since he was 12. Every year during the winter out grass gets really short and I notice my horses' weight start dropping. Well this year my pony's did wayyy more than usual. He had a colic episode back in November at a show from a result of dehydration and cheap hay. Since then we put all of my horses on Orchard & Alfalfa. My horses have been on a rotational dewormer schedule (to be specific the premium one from Horse.com) and the past couple of ones only covered a couple of different types of worms so in January I gave them all Equimax to knock out most of them. At the end of this month I'll go back on the rotation plan. Well anyways I thought that may of been why he was so skinny but it didn't seem to help. About four weeks ago I started him on Seminole senior feed.
Right now he's getting 1 flake of O&A and 3/4 scoop of senior feed in the morning and night. It seems to be alot of food for a pony (he's around 13 hands, so a large pony). I thought maybe I should start keeping him in the stall during the day so I tried it today. When I let him out tonight though he was limping on his front left foot. Could this be stiffness or is it from feeding him to much food? I worry about founder, but his ribs are still showing. He's never had problems limping and I have never had a horse that has ever been unsound. What can I do to get his weight back on? Should I try another wormer? What about beet pulp? Should I feed him less food? HELPPPPP!!!!!
*He has a show on March 27th so I want to try to get him looking good by then.*