feed of that high protein, IMO would maybe be fed to add meat to the calves... but would burn any fat off. It also would make them quite runny- and not with their legs!
They also could be feeding a 28% suppliment, and mixing it down to a respectie protein level... That wouldn't be out of wack.
My guess, could be they were feeding some kind of a super high fat ration- not protein
or you miss understood them... Caught the wrong part of the conversation.
But then again, I'm not super up on my sale calf feeding...maybe I'm wrong