Chinese people were the first people to start raising pigs for meat over 2,000 years ago. Up to the 1950s, most farms had a couple of pigs that were kept outside. Thanks to technology and growth in farms, pig farming has greatly expanded since the 1950s. Farmers are able to care for their pigs indoors, which allows them to check the herd health, care for piglets, feed individual animals based on their diet, and control breeding. Today, the average herd is about 500 pigs.
Prior to the 1950s, most farmers only had enough pigs to feed their own family.
Today, the average herd is about 500 pigs.