I found this after looking at the link you posted.
http://www.extension.org/pages/67352/feeding-soybean-to-poultry#.VCbEycItBdc
From it:
" Soybeans can be fed to poultry whole or as soybean meal, a by-product of oil extraction. Oil can be extracted from soybeans by the application of pressure, which is referred to as expeller or mechanical extraction, or by solvent extraction. Most commercial feeds use solvent-extracted soybean meal. Only mechanically extracted soybean meal can be used in organic poultry diets.
Soybean meal has a high protein content, especially when compared to other plant protein sources. Soybean meal also has an excellent amino acid profile that complements that of corn, the primary energy source in poultry diets."
This is from the University to Minnesota.
I am not disagreeing with you, I am just trying to figure it all out.
And so you should, as livestock keepers we have a duty to fulfill. I've been reading up on soy for the same reasons, myself.
Yes, that's all standard info about soy, you can find even more glowing endorsements all over the place.
Yet the research papers proving it's toxic still remain. They're not drop-dead-overnight toxins, but far more insidious.
Soy is classed as an oilseed, not a pulse, its primary use is for industrial purposes, and historically industrial manufacturers have always benefited from finding ways to re-purpose waste rather than just dumping it, which is often difficult and sometimes outright illegal for them. Our diets currently include many industrial byproducts. Soymeal in livestock feed is one of them. This isn't biased or conspiracy theorist, it's plain factually based information, accepted and acknowledged by even the industries responsible for the byproducts. That's just the processing chain.
Always pays to remember this though...
ALL fatally toxic plants also contain a broad spectrum of nutrients, since they are simply part of the average life-form, plant or animal.
They're the very same nutrients we need for life. But when they come in conjunction with toxins, we deem the plant toxic; doesn't mean it also doesn't contain all the same vitamins, minerals, proteins, etc of plants we deem safe.
Best wishes.