x2Well... the fact of the matter is that the debate is still out and no one really knows the long term effects as this is relatively new. Also, GMO is not one specific thing, it is a modification to an existing food. Some may be safe while others may not be. Some countries ban certain GMO crops while other countries develop them. Only you can decide what is right for you and your flock.
To the people making this look like a debate on a youtube comment thread:
I'm sorry if I'm being harsh and officious, but keep it polite, please. Neither of you is going to convince the other.