I recently picked up a 3 year old that to me is under weight. I'm currently feeding her Seminole Dyna Sport with 4 ounces of Rice Bran oil a day with Alfalfa 3X a day.(Will be free choice end of this week). She was power packed and teeth done..I noticed when I ride her she will cough some. Not sure if it's dust or something else? I was told that she had ulcers before and was treated for them..Educate me..Are ulcers recurring? Treatment? Thanks! :-)