Livestocks are commonly defined as domestic animals raised commercially to produce milk, eggs, meat, fur, bones, and other commodities including leather, fur, and milk. It can also be used to describe livestock that are raised for the purpose of being made into living products, such as sturgeon and fishes. In United States, cattle and hogs are some of the widely used livestock across several industries, such as dairy, hog farming, chicken production, and swine production. Amongst animals used for food, cattle and hogs are the most popular. In terms of numbers, cattle and hogs are one of the top ten most populous farm animals in the U.S.
Livestock production systems usually consist of two or more stages. Firstly, there is pre-cropping, which happens prior to establishing the main crop. Second, post-cropping, after the crop has matured. The most efficient way to grow a large number of livestock is with an integrated livestock production system, which combines genetics, feeding programs, fertilization and farming management techniques to ensure high productivity. There are three types of feed: alfalfa, soybeans, and grain.
A very important aspect of a livestock production system is the selection of the best pasture for the animal. For example, deer and elk need higher grasslands to graze on, while cattle and hogs need low-grass areas. Additionally, certain land types attract different animals, which must be identified and implemented in the production system. Finally, cattle need different feed because they forage at different times of the day and feed at different elevations. Some of the common cattle feed types are: fao et, grain, pastured stocking, and pastured bunting.