Man, but you got to thin, about how ractopamine work, it is a beta reactor that work by pulling the moister out of fat and turning utilizing it for muscle growth and development. It works in the same order that things like zilpateral (zilmax) work in ruminant animal, just by using a different beta reactor. So, if you don't feed the fat a long with the Paylean you are actually hurting your self, because if you do not feed some type of extra energy. The barrow body is going to start searching for other places in the body with natural fats or even tissue in the joint, and is where you will start getting swollen and and other joint problem. Then on top of that, why in today time with the softer and more productive look; we are using in hog today. Would you want to really want to burn fat (which actually give the animal a fresher look), unless you where trying to shape on up, and there are many different problem out there today that are meant for that that are a whole lot less expensive and less dangerous to use. For example, Final control, or even the fitters 35 that KBG is always talking about.
Plus, if you look at the 811 bag you will noticed that there are a few other differences, for example the lysine level is a little different and has a totally different source of fat or energy then sumo. It is a milk based fat which dose not contain the same level of fat as the sumo(73% fat) which is basically the 418 fat (which is oil based fat) mixed with definition. So, the point is if you do not feed fat along with Paylean you are asking for definite problems to me.