Originally Posted by fromthismoment
Putting weight on should be a slow process. Possibly your horse didn't get enough hay over the winter. I would however have a vet check her out to rule out any other causes.
Before adding other supplements have your horse on free-choice hay all the time. Rice Bran is good for putting on weight however the calcium phosphorous ratio is wrong in the feed. This isn't a big concern if your not feeding that much rice bran and your horse is getting calcium from other sources. If you are not sure about how much calcium your horse is getting you can consider adding a calcium supplement. Again give your vet a call and ask for their opinion.
I don't know anything about Purina Strategy.
All feed changes should be made gradually.
Yeah I think the hay was the issue over the winter I agree there. I will have the vet out to look at her soon. I had a ex horse breeder come out to the house a while back and he said man that mare is wormy! I have sinced wormed her and a month later wormed her another time using a different wormer.