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With pig stocks only second to China, pig farming is hugely popular in the USA.

Pigs can be farmed in commercial free range enterprises and as an extensive practice, but it is intensive farming that is by far the most common. This is because intensive pig farming is big business due to ability to raise a large amount of pigs in a cost-efficient manner.

While the majority of pigs are farmed for their food, their skin, fat and other byproducts are used in processed foods, for medical use, and in the clothing and cosmetics industry.