Can confirm. I tracked my expenses for producing eggs several years ago, and it was $6/dozen even then, not even using non-GMO/organic feed. Big producers use whatever gives them the qualities they need at the end, which is timed to be the earliest it can be, to reduce costs, so they also select for abnormally rapid growth. Our family toured an M&M/Mars candy factory once (a relative was a mechanic there), and all of the candy items that fell off the conveyor belts were placed in huge barrels and sold as cattle feed. Agricultural by-products are also used an animal feed, in dairies as well, such as cottonseed meal and other substances that ruminants would not normally graze. The resulting fatty-acid profile can be bad for human (and animal?) health. The fat-marbling that is considered so desirable in beef - it suddenly occurred to me that, if I saw that on a post-mortem examination of a human, I would conclude that the person was terribly ill.