I recently moved my 7 (ish) year old mare to my house but have had her boarded for 1 1/2 years where she originally was fed a scoop of Purina Healthy Edge (not sure how much it weighed bc the boarder just fed her) a day, we changed her off of that this spring bc she had put on close to 100 lbs. I switched her 1 lb of Purina Enrich Plus a day. She has come down to a much better weight I would like to see a little bit more off of her but coming into winter I feel she is at a good weight. (I live in Michigan)
My question is does she have to be grained? Can I switch her to oats? I'm new to feeding horses and I don't want to over feed her but would love to switch to something a little less pricey now that I have her at my own house where I can decide what to feed her. Any opinions would be great.
She is on pasture and I do give her 2-3 flakes of hay in the morning and night.