This paper explains the swine productive capacity study and the swine growth during the lactation period and the breeding under the animal genetic type influence. It was concluded that by crossing the Yorkshire x Pietrain breeds, a young swine breed has been fetched, defined by a more advanced intensive growth; made by boars and sows similar to Landrace breed resulting in a bigger body mass of the studied swine family at the age of two months, explained by the manifestation of the heterosis phenomenon.