Fig. 2
Spearman’s correlation coefficients between all analyzed sperm parameters in boar spermatozoa stored for 240 h at 17 °C (n = 35). Values in bold font—statistically significant correlation (P < 0.05). VAP-average path velocity; VSL-straight line velocity; VCL-curvilinear velocity; ALH-amplitude of lateral head displacement; BCF-beat cross frequency; STR-straightness; LIN-linearity; mot-percentage of motile spermatozoa; PMOT-percentage of progressively motile spermatozoa; RAPID-subpopulation of rapid cells; Live—SYBR+ PI; PI− PNA− live with intact acrosome; HDS—%HDS (high DNA stainability) the percentage of spermatozoa with immature chromatin; DFI—%DFI (DNA fragmentation index) percentage of spermatozoa with DNA fragmentation; Live act—live with active mitochondria (Rhodamine+ PI−)