Correlation of the fertilising ability of semen from individual male fowls with sperm motility and ATP content.

Individual fertility results were obtained by artificially inseminating semen from 24 cockerels. The fertility thus obtained was shown to be strongly correlated with sperm motility, as measured by an objective spectrophotometric technique (r = 0.82); with sperm ATP concentrations (r = 0.76); and with the morphological integrity of spermatozoa, as judged by light microscopy (r = 0.67).