"About 40 percent of global cereal production is used for animal feed. Together with pasturing, three quarters of all agricultural land is being used to generate animal foods (e.g. milk, meat, and eggs).221
: "The world's livestock population experienced an unprecedented overall increase of 53.7 percent between 1980 and 2009 for the four major animal categories of cattle, sheep goats, pigs, and chicken." 225
p227 says: "livestock production accounts for 70% of agricultural land and 30% of the land surface of the planet." [citing FAO's Livestock's Long Shadow, 2006)
Hans Hurni, et al., “Key Implications of Land Conversions in Agriculture, Wake Up Before It Is Too Late," Trade and Development Review 2013, UNCTAD, 221.