Which is better for feeding cattle, potato residue or sweet potato residue?

May I ask which of potato residue and sweet potato residue gives better results when fed to beef cattle, and how good are the feeding results?
--------------------------------------
I do not really know, looking forward to finding out................................
--------------------------------------
May I ask, with potato residue and sweet potato residue, what has been extracted from them, and what are they the leftover residue from after being used to make?
--------------------------------------
I do not know the specifics either, I only know they are by-products
--------------------------------------
It depends on the extraction process for the residues and the main product; generally they have all been fermented!