Haha - I get your point! I just thought it was kind of funny because I was reading and kept going "Wait - it is a concentrate feed, but NOT grain?!?!" and I was delighted to see other people were thinking along those lines!
Another book that is very technical, but also could be very helpful to someone wanting to take the time to read it is "Equine Nutrition and Feeding" - it is actually the text book that Michigan State University Equine Nutrition students use, from what I understand! I think I will be ordering this!