A hundred broilers will take 1 50# bag on week one and 2 week two and 3 week three, so 41 bags when they reach 8 weeks, so at 8 weeks you got $575 in feed and say $100 in the purchase of the chicks. so 675 for 100 birds that is like 6.75 per 5# bird.
Turkeys are similar, they have better feed conversion and they can fetch a better price if you sell them.
As a veg I'd be warry of any sobean product, the most GMO plant. Hello tofu.
I would say know what you are eating and how it was raised/grown. Be informed about your food, most people investigate thier next car than they do the food they feed thier kids. OK off soap box till later.