Why is crossbreeding used in commercial piggeries?

Question

Why is crossbreeding used in commercial piggeries?

Answer 1

They cross-breed purebred types to get hybrid vigor in the pigs are going to be grown out for meat or put into a commercial feed lot.  They gain weight faster and are more hearty than purebred pigs.  Most producers will maintain a purebred sow herd of one breed and purebred boars from a different breed if they are producing pigs for meat.  Sellers of breeding stock will stick with one breed.

Answer 2

crossbreds are used primarily for meat production while purebreds are used for breeding by crossbreeding not just pigs but any animal you get a good animal with a lot of hybrid vigor