Table - link
||Gidon Eshel and Pamela Martin, Diet, Energy and Global Warming, Earth Interactions, Vol. 10, pp. 1-17, March 2006
||(1) Pimentel D., and M. Pimentel, 1996a: Energy use in livestock production. In: Pimentel D., and M. Pimentel (Eds.) (1996), Food, Energy and Society, University Press of Colorado, 363 pp. (2) Pimentel D., and M. Pimentel, 1996b: Energy use in grain and legume production. In: Pimentel D., and M. Pimentel (Eds.) (1996), Food, Energy and Society, University Press of Colorado, 363 pp.
||To obtain the mean American diet, researchers use actual per capita food supply data summarized in the Food Balance Sheets for 2002 (FAOSTAT 2005). Those Balance Sheets report a total gross caloric consumption of 3774 Kcal/person/day (BNID 104634), of which 1047 Kcal, or 27.7%, are animal-based. Of those 1047 Kcal/day, 41% are derived from dairy products, 5% from eggs, and the remaining 54% from various meats.
||Table gives ratio between energetic input (fossil fuels, in kCalories) and protein output in kCalories for various foods