The discussion is artificial insemination of swine. By 1975, artificial insemination of swine had become a common practice especially when the freezing and thawing of semen became possible. This article concerns itself with with research that was conducted at Dickinson with swine AI with semen which was purchased from a mid-western, commercial supplier. Projects summarized in this paper were conducted in three phases under farm conditions which were typical of swine producers who operated in south-western North Dakota. Three experiments were reviewed. The first was designed as a pilot investigation comparison natural service and AI of the synchronized sows where one insemination was used. The second dealt with sychronization throughout and one insemination as compared with two. The third was conducted to answer questions regarding AI amongst unsynchronized swine comparing natural versus AI. These trials all display how both purebred and commercial pork producers may capitalize via the utilization of AI by frozen swine semen specimens. Purebred breeders may sample a large number of bloodlines at a reasonable cost to achieve superior offspring. Commercial breeders may benefit via VI allows the ability to close herds and, thus, reduce the risks of importing potentially hazardous disease organisms. However, proper management along with increased labor are required to produce success by this method
