crushed oats are better for the horse ande you wouldnt feed as much. whole oats have a tendency to go straight through without doing anything also becuase they still have their points they can get stuck in the gullet etc etc. You are always better off feeding crushed rather than whole oats.
Have bought him crushed oats which do look more crushed than rolled ones so shall see. Top Spec has made him really flat (i know everyone says it can't be that but honestly since having it he's lost his bounce!) so have gone off that and onto oats to see how we go. I am soaking them but he's only having a v small amount to start with!!