Gilbert Hollis University of Illinois

Publish Date: June 3, 2006

A major concern in a swine production system is proper management of the pregnant sow. In the past, sows usually have been sheltered in open-front buildings, barns or portable houses on pasture or dry lot. Only a relatively small percentage of breeding herds have been continuously confined.

Publish Date: June 3, 2006

Pork producers have long recognized the value of forages in the swine enterprise. Prior to 1950, pasture was considered a vital component in swine feeding programs. But after synthetic vitamins became universally available during the early ’50s, the need for forage crops in swine production was diminished. But even today, pastures and forages may contribute a practical and economical part of feeding hogs.

Publish Date: June 3, 2006

Correct use of selection concepts is essential if genetic improvement is to proceed at a rapid rate. Therefore, seedstock breeders and commercial pork producers need to fully understand the principles of selection which directly influence the amount of genetic improvement made per year. This fact sheet explains the primary concepts necessary to gain an understanding of genetic improvement. Then it discusses the effect of applying selection concepts on genetic improvement.