Contrary to many reports, Biopact has an article that leads off:
Distiller’s dried grains (DDGs) are the leftovers from converting corn into fuel ethanol. In the US Midwest alone, ethanol producers generate 10 million tons of DDGs annually. Farmers buy the residue for between US$85 and US$110 per ton and feed it to livestock. The rapidly expanding ethanol market may imply that meat prices will drop because of lower feed prices. This is the case in Europe, where, according to an EU study, the large new stream of biodiesel residues (glycerin) and ethanol byproducts suitable as feed components will result in lower meat prices.