Submitted to: Book Chapter
Publication Type: Book / Chapter
Publication Acceptance Date: March 2, 2010
Publication Date: March 16, 2010
Citation: Long, J.A. 2010. Chapter II. Determination of sperm concentration. Section 3. Photometer procedure. In: Bakst, M.R., Long, J.A., editors. Techniques for Semen Evaluation, Semen Storage, and Fertility Determination. 2nd edition. St. Paul, MN: The Midwest Poultry Federation. p. 23-25. Interpretive Summary: A photometer provides an indirect estimate of the sperm concentration by measuring the optical density of a highly diluted semen sample. The optical density is directly proportional to the concentration of sperm in the sample. Before reading any samples, it is necessary to zero the machine using a "blank sample", a tube filled only with 3% sodium citrate). The number of sperm in the semen sample is determined by comparing the sample’s optical density to a standard curve or using the line equation supplied by the manufacturer for the photometer.
Technical Abstract: N/A