This is all well and good but please pray tell, how do Organic producers propose to limit damage from the European Corn Bore or other insect pests? The simple answer is that they make these pests an offer that they can't refuse by using man made versions of pesticides that were first isolated from plants or other natural sources. Things like Arsenic, Copper, Sulfur, or other natural pesticides like Strychnine, Roanoke, 1080, Neem Oil etc. . They also spray fruits and vegetables with
Bacillus thuringiensis microbes. The same microbe that was used to produce many GM crops that make their own insecticides. The big difference is that the USDA allows Organic Producers to spray these insecticide germs on their crops up to 15 minutes before you pop the resulting food into your mouth but the non GM crowd says that the GM crops treated with this same "pesticide" will result in a gruesome death if you eat the non-GM version of the same bacteria. And some of you still must think that it is me who is either dishonest or else misinformed!!!
I'm sorry, but you are VERY misinformed. First, let me say that I am an organic producer. That being said, wow... I dint know where to start.

The USDA has very strict guidelines on what we can, and cannot put on the soil. Arsenic? Absolutely not. Strychnine? Way not...Round up? It'll take 3-4 years to get recertified if I use THAT.... Absolutely not. Look into BT a LITTLE more lol.. There are thousands of different species of Bacillus, all with different "jobs" (like the microbes in yogurt lol).. Bacillus thurungensis is mainly used to control larvae of borers and grubs and other species are..ih pooey this will take forever, just read links. I randomly snagged this..
http://www.disknet.com/indiana_biolab/ba00.htm The part of the BT that has been spliced for GMO? Why ya think they picked that one? It works

Spinosad is another microbe commonly used.
http://www.dowagro.com/turf/products/insecticides/conserve_additional.htm Also beneficial nematodes, mites and insects. Herbicide like Avenger and Scythe use naturally derived botanical oils or combinations of smotheting techniques. Here's info for THAT.
http://avengerorganics.com OK, on to Neem oil. Organic, safe for beneficials, people EAT it lol... Um Neem oil is from a seed from a tree. Yet another wonderful NATURAL product that only affects the bad insects. They have to ingest the neem oil, and it causes a malfunction of hormones. The power component of Neem oil is Azadirachtin. Info on THAT...
http://pmep.cce.cornell.edu/profiles/extoxnet/24d-captan/azadirachtin-ext.html That's what most of organic control is, hormones and microbes; how do you think organic produce gt away with not using chemicals? Like wormers? Useless once you have a FULL understanding of the way the soil, worms,microbes, AND birds works, a HUGE peice of a very important puzzle is missing. Please do not spread misinformation. I work very hard to ensure that nature nurtures my crops, and really don't appreciate having to constantly clarify outright lies

If I left anything out, PLEASE feel free to ask so I can clarify anything else

To answer the OP question, yes, it is entirely possible to source organic, non GMO feed... But its super pricey. Best bet is sourcing the grains and legumes and mixing it yourself; I wouldn't have it any other way

Edit, autocorrect nightmare.