Today, factory farming accounts for 40 percent of agricultural-sector profits. Gigantic businesses in which animals are slaughtered on a production line have emerged with global production chains, scientific breeding and optimized feed.
https://p.dw.com/p/1DxqQ
Advertisement
High-yield dairy cows and rapidly growing animals require concentrated feed that is heavy in starch - and a lot of it. Almost a third of the world's arable land is now used for feed cultivation.