I'm fairly new to the mini horse world. We have had a couple class A's for several years now. But we just got two new ones that we rescued. One Stud 1.5 years old. One Mare 2 years old Both Class B. They are both thin, look wormy to me. I would like to start them on a healthy diet. We give our other mini's pellets and they are easy keepers and healthy. I want to feed them beet pulp as well. We have no idea what they were fed previous (other than very little and could be crappy feed) We gave them Alfalfa pellets (which is what we feed our horses) and they both got diarrhea and so then we gave them probiotics which is helping to firm up their stools. I want to worm them but don't want to do to much at once. However, I would like to give them beet pulp as well. Any advice would be greatly appreciated. This is our first encounter with rescue, horses. Thanks in advance for your help.