Rhaid i ffermwyr moch wneud yn siŵr fod pawb sy'n dod i gysylltiad â'u moch yn gwybod nad ydyn nhw i roi unrhyw fath o wastraff arlwyo, sbarion cegin na chig a chynnyrch cig yn fwyd i'w moch.
Pig keepers must make sure anyone coming into contact with their pigs know they are not to feed catering waste of any description, domestic food waste, or meat and meat products to their pigs.