I too have seen many changes in agricultural, most of them up close and personal. Overall the greatest change is the one brought on by genetically modified crops. I have yet to see any negative impact from GMOs on chickens, other livestock, the environment, the Earth or on humans.
To the contrary, every impact has been a positive impact. The impacts range from increased yields, higher profits for the farmer, lower food prices for the consumer, decreased need to plow or cultivate the Earth resulting in less top soil being eroded away, not to mention cleaner air and water. The diminished need to cultivate also saves diesel fuel because there are far fewer tractor hours needed to manage weeds or to control other pests in most GMO crops.
There is also one other huge benefit I want to mention here, thanks to bt cotton, bt corn, etc. now a lot less insecticide poisons are sprayed on crops than what used to be sprayed in a willy-nilly fashion because the farmer was always running behind or trying to catch up in his pest control or management regiment. Besides Monsanto and other agri-businesses giants are the largest manufactures of agricultural pesticides and some people expect rational humans to believe that these large agri-businesses have purposely cut their own financial throat by developing bt crops.
Okay, I relinquish my soap box and eagerly await any scientific (no opinions please) non biased evidence that GMOs are in any way bad except that they perhaps reduce oil company profits.
PS: the suffix (dot) com or (dot) org at the end of an internet address is not in and of its self scientific evidence. Only organizations doing actual research on crops and crop yields qualify. Organizations who seem more interested in using the Internet and their Nonprofit, Tax Exempt Status to either fleece the unwary or to pad their bank account will be dismissed out
I'd say that I respectfully disagree with you. I was recently given a year and a half old Jersey Giant with a bag of GMO feed. Upon receiving her I noticed that her eggs were enormous. When I opened them they would contain a fully shelled whole egg inside of the larger egg. This occurs when an egg back tracks up the ovuct and a new egg forms around the previous egg. Once I transitioned the hen to the certified non GMO feed I buy this stopped happening. The only correlation was the feed. My only conclusion was that this particular hen had a noticeable sensitivity to GMO'S.