My old animal nutrition class in college taught me soybeans were between 38 and 46% crude protein depending upon their variety and potentially their moisture %. Some beans had more fiber or oil. I can't imagine roasting would improve their protein content.

Soybeans have to be roasted before feeding to many animals because they have a tryptophan inhibitor that prevents the uptake of some amino acids necessary for muscle growth.

Deer can eat them raw with no ill effects. They must like the crunchy texture or perhaps the change in taste.

I have eaten them. Our Illinois soybean growers sell them as a promotional item. They are not bad, but I'd like them to be a little saltier. They are quite crunchy.

Good luck!

LLBUX