Sperm DNA damage after scrotal insulation in rams

Human male fertility is in decline and one reason given for this is the increased incidence of sperm showing chromosomal or DNA damage. Previous work in laboratory and farm animals as well as humans has shown that elevated testicular temperatures increases the incidence of sperm with DNA damage. As part of a study into the effect of temperature on mutation rate in spermatozoa using rams as a model, measurements of sperm DNA damage were also...