I have a 7 yr old QH mare who is currently idling. She is in a very large paddock with plenty of grass to graze on. I currently only spend weekends with her due to work. When I do go to see her I give her a mixture of wheaten chaff and lucerne chaff with occassionally a drizzle of mollasses as a treat along with apples and carrots. My question is, is there any other better feed or a more exciting mix that I can give her? Also should I be giving her any type of supplements? She is very healthy and does not need to gain any weight at all. I would possibly like to give her something to improve the growth of her mane and tail though.