Basic avoidance of food competition among ruminants, non-ruminants and humans - A simple analytic description

The present study suggested a simple analytic description of the basic avoi dance of food competition among ruminants, non-ruminants and humans when it was based on the production of forages, grain crops for human consumption and extra grain crops as animal feeds. The results obtained were as follows . (1) Humans depended basically on the plant production for the raw materia ls of foods, where harvest index of total grain crops, the proportion of gr ain crop production for human consumption to total grain crop production an d the production ratio between forages and total grain crops were essential factors. (2) Forages and straws from both grain crops and extra grain crop s were used as ruminant feeds. (3) Extra grains were used as a non-ruminant feed. (4) Grains and animal protein from both ruminants and non-ruminants were used for human consumption. The results (1), (2), (3) and (4) supporte d the human life.