I have a 12yr old Freisian Mare 5 months into her pregnancy and no matter what I try she keeps losing weight!! I've been mixing her feed with corn oil and she gets fed 4 times a day!! But she is still extremely skinny....she eats her feed okay but doesn't really eat her hay. She's carried 4 times before and has lost weight each time but never this much. She also has really bad arthritis, she's not my horse and I advised against breeding her again but she always does really well, so her owner decided to again. But now he's beside himself with how skinny she is and I hate seeing her like this too!