I am getting my first horse in a couple weeks (I am 15) and I'm not sure how to introduce her to the feed I have chosen (Purina Strategy Healthy Edge) I am not able to get her old feed and would like to know how to introduce it to her without the old feed, and I know it takes 7-10 days. Where I am boarding her there isn't an indoor arena or anything like that, just a pasture and a 3 stalled barn. I won't be doing much with her, plus winter is coming.. She is an 8yr QH and is about 15 hh. This has been the one thing I've been freaking out about!!