Why is it called fodder for livestock and fodder for people?

From the literal meaning of the understanding, feed is used to feed animal materials, animals are carnivorous, herbivorous, omnivorous, feed includes plant raw materials (such as grass, straw, food processing by-products: dregs, slag, cake meal, etc.), animal raw materials (fishmeal, animal meat, bone meal, offal, etc.), as well as mineral raw materials, which many of the raw materials are usually not eaten by the human thing. Food refers to substances that can meet the needs of normal human life activities and contribute to the extension of life, the basic characteristics of food are good taste, good digestion, easy to absorb. Normally the impurity and bacterial content of food is to comply with relevant laws and regulations.

Of course, in special circumstances, feed and food are also converted to each other.