I have an all around horse so she does lots of different stuff but I don't ride her every day, maybe 4 times a week at most. She's fairy little too, only 14'3HH and in good shape. What would be a good feed or supplements to give her maybe once a week to give her extra vitamins etc. I was thinking maybe just getting her some plain old oats then putting some supplement in it but I don't know what kind. Any advice and tips you have is welcome! Thank you!