Relax I want to talk this out.
I just need to know where you're pulling that from and how it was calculated. Otherwise we're just going "tis!" "tisn't!" till one of us gets bored.
Like are you referring to cattle farming in Botswana? global stats? all animal ag including fishing in Japan?
I can't discuss a magic number, I have to know how it was derived and under what assumptions. Then we can examine the assumptions and methods of derivation and determine whether or not we agree it to be true and why or why not.