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Fertility of Boar Semen Artificially Inseminated following In Vitro Storage¹

Illinois Agricultural Experiment Station, Urbana

Abstract

Sows and gilts, unselected for reproductive performance, were artificially inseminated with fresh, undiluted semen which had been stored at 7° C. in an egg yolk-glucose-sodium bicarbonate diluter for various lengths of time. The conception rates for fresh, undiluted semen, and semen stored for 1, 2 and 3 days were 56% and 55%, 5% and 42%, respectively. Number of fetuses and embryonal mortality was normal in those cases in which fresh and one-day-old semen was used. Early embryonal mortality increased when the semen inseminated had been stored for 3 days.

¹ The authors express their appreciation for assistance received from Dr. B. C. Breidenstein, Meats Division; Dr. S. W. Terrill, Swine Division; Dr. H. W. Norton, Station Statistician; R. H. McDade, Swine Herdsman, and his assistants and from graduate students in the Animal Genetics Division in making this investigation possible.

² Present address: Assistant County Agent, Cadiz, Kentucky.