Effect of non-functional spermatozoa on post-thaw recovery of motile and viable spermatozoa.

Post-thaw normalized sperm motility (a) and viability (b) of boar cryopreserved semen samples with different proportions of non-functional spermatozoa before freezing. The data are the means ± SEMs of 3 ejaculates per boar. Native is the original semen sample and 25–75% indicates the final proportion of non-functional spermatozoa in the handled semen samples. a–c indicate differences (p<0.05) among semen samples within the same boar.