Don't lump chickens and cows together (the study doesn't). Beef Cattle are much less efficient in both water and grain usage than chickens. http://www.care2.c

Don't lump chickens and cows together (the study doesn't). Beef Cattle are much less efficient in both water and grain usage than chickens. http://www.care2.com/causes/cow-versus-chicken-the-true-carbon-hoofprint-of-livestock.html http://www.care2.com/causes/cow-versus-chicken-the-true-carb...