Just an FYI - organic does NOT mean GMO-free, unfortunately. I contacted several producers of organic feed - none were GMO-free. The two are not necessarily related.
We're currently using a locally produced feed that is GMO-free, but is not organic.
Also, BT corn is just one type of GMO...
I wanted to comment on the whole "organic not being as nutritious" idea. Things grown organically are not necessarily more nutritious. That is the goal, obviously, but it is possible to obtain foodstuffs that are grown non-organically that have more nutritive value than something that has been...