She's coming from a dry lot. She's been hand grazed for as much as an hour, but not on a regular basis (23 y/o TB mare) She's out in the day with a grazing muzzle and can go in and out from her stall to her grassy paddock (one acre). We have really good coastal hay in the paddock. She's in at night with hay to make sure she gets her roughage. She also gets pellets 2x per day for now.
She's starting with an hour a day free grazing. She's put on a timer and I've been watching for foot ouchies. Everything is fine so far. It's been a week.
I was going to bump her up 30 - 45 minutes per week on free grazing time. Does anyone have experience with this sort of thing? How did you manage it - any problems?