Originally Posted by PhlyanPan
Couldn't you just aerate it in the keg like you would carbonate and then rack it to your fermenter once it's aerated? Easier is a valid point though.
Any oxygen beyond the saturation point (usually about 8.5-11 ppm in water, wort is somewhat lower, depending on its SG) will outgas within a few hours if undisturbed. If you rack or otherwise disturb it, most of what you put in will come out of solution pretty much right away. In other words, you would be throwing money out of the window.