Iowa State University Veterinarian Records, RS 22/6/0/9, University Archives, Special Collections Department, Iowa State University, http://www.add.lib.iastate.edu/spcl/arch/rgrp/22-6-0-9.html
Although artificial insemination (AI) in swine has been developed commercially in many parts of the world (Norway, Japan, Belgium, France, England and some areas in the United States), it has not been used extensively in Iowa on a commercial basis. The application of this technique for experimental purposes, together with information reported in the literature, illuminates some problems and helps explain why this procedure has not developed in Iowa.
Lovell, J. E.; Speer, V. C.; and Hays, V. W.
"Investigational Use of Artificial Insemination In Farm Swine,"
Iowa State University Veterinarian: Vol. 27
, Article 2.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol27/iss2/2