Thesis - Open Access
Master of Science (MS)
Department / School
The number of female swine which do not settle in producer's herds, both purebred and commercial, is thought to be at least 10%. Controlled studies at experimental stations indicate that this figure may be to low. Unconfirmed reports from several mid-west experimental stations indicate that between 20 and 30% of the female swine bred to farrow in the spring of 1950 failed to farrow. Approximately 30% of the gilts and sows bred in the South Dakota State College Swine Farm in the fall of 1949 failed to farrow, Also a considerable number of gilts which were to be bred were never observed to be in estrus during the breeding season. These gilts consequently were never bred during that breeding season.
Library of Congress Subject Headings
Swine -- breeding
Includes bibliographical references
Number of Pages
South Dakota State University
No Copyright - Non-Commercial Use Only
Repp, Ward William, "The Influence of Time of Mating, Number of Matings, Injection of Stilbestrol and Pregnant Mare Serum Upon Fertilization Rate in Swine" (1951). Electronic Theses and Dissertations. 2223.