70% of deforestation in the Amazon serves livestock production
"The magnitude of the food system’s contribution is more understandable once realizing that about 70 percent of deforestation in the Amazon, for example, serves livestock production." (CIS 5)
Fearnside, P.M. "Deforestation in Brazilian Amazonia: History, Rates, and Consequences," Conservation Biology, 2005. 19: 680-688. (No link available) [verified 4/25/14]