A cow needs to feed 1 ~ 2 kilograms of pasture every day, so one acre of pasture is generally enough to feed 15~25 cows. If the pasture can be well managed, an acre of pasture can raise about 30 cows. If it is large-scale farming, it is necessary to plant 5 to 10 mu of grassland for raising cattle, and the area of grassland for free-range or grazing needs to be larger.

Take alfalfa as an example. Alfalfa originated in Iran, and now China and southern Russia are the main producing areas. It is rich in various nutrients, especially leaves. It can grow many times a year, has strong drought resistance and cold tolerance, and has a high yield. It has the reputation of "king of pasture" and excellent grass quality, and is the favorite food of livestock and poultry.

Lolium perenne is the most suitable forage for raising cattle because of its fast growth, rich nutrition and good palatability, which is preferred by herbivorous livestock. It can be broadcast twice a year, with strong reproducibility and high yield.

The entries come from the Internet.