I feed twice a day.
Breakfast: 1 flake orchard grass.
Dinner: 1 flake orchard grass, 1/2 lb. Purina Farr XTN, 1/2 cup Boss (Black Oil Sunflower Seeds), 1cup rice bran. Until I use up what I have, 1/2 qt. Oat hay pellets. And, 1 tsp. Probios
Why: I live in the desert, no pasture at all. I like to feed grass hay. Orchard instead of bermuda because I am allergic to bermuda. :(
The XTN, is for a little grain and minerals, although I may just start giving some mineral supplements.
The boss and rice bran are for sand clearing. The sand in my area as well as in Palm Springs and Australia does not mix with Psyllium. It turns into a green glue (I'm not kidding,) that actually causes colic! So, since Christy lives on dirt... And loves to just eat the stuff... I give boss and rice bran. She has not had any sand for the last 2 months, since I started giving them.

And she has a very nice shinny coat, mane and tail. :)
The probios is because she has had sooo much diarrhea in the past, that her system has not yet had a chance to develop a good intestinal digestive enzyme system. So, I help out a little. Will cut out when she has a chance to develop her own bacteria.
She is getting the oat hay pellets because she used to have super soft feet, and it is kind of left over from a previous diet that didn't work out well. I have a little over 50 lbs. Left... So I just give her a little/day.
I also give oat hay pellets in the winter to help keep her warm. She has a corral with run in shelter, and I don't blanket, as I don't need to. She is a nice toasty girl. :) (And yes, I did go out at 4 AM to check and make sure the night it got down to 8 deg. Burr.)