Do Paramittas need to be part of Theravada Buddhist training?

Do Paramittas need to be part of Theravada Buddhist training, much like keeping the 5 precepts or the noble eightfold path? Or are they just results/rewards we get for practicing the noble eightfold path/keeping the precepts? And is there are specific order (eg.Dhana-->Seela-->Nekkhamma etc. ) or should all be concentrated on at the same time?