Skip to main content

Table 2 Effect of porcine relaxin (pRLX) on sperm motility and velocity parameters following a longer storage (Day 4 post-semen collection)

From: Beneficial effects of relaxin on motility characteristics of stored boar spermatozoa

Parameters Relaxin concentrations (ng/ml) P
  0 100 500
Motility (%)* 66.8 +/− 2.6a 67 +/− 2.3a 68.3 +/− 1.4a 0.71
Progressive (%)** 51.4 +/− 1.9a 53.4 +/−3.4a 58.0 +/− 1.2b 0.03
Rapid (%)** 68.4 +/− 1.9a 69 +/− 2.7a 75.1 +/− 1.2b 0.02
VAP (μm/s) 80.5 +/− 2.3a 79.5 +/− 2.7a 90.2 +/− 1.5b 0.03
VSL (μm/s) 51.5 +/− 1.8a 55.2 +/− 3.4a,b 57.6 +/− 1.4b 0.04
VCL(μm/s) 175.0 +/− 3.6a 172 +/− 4.6a 183.7 +/− 2.3b 0.05
STR (VSL/VAP, %) 61.0 +/− 0.9a 62 +/− 2.6a 61.4 +/− 0.7a 0.99
LIN (VSL/VCL, %) 29.6 +/− 0.6a 32 +/− 1.7a 31.7 +/− 0.6a 0.39
  1. Asterisks indicate proportions from total (*) or motile (**) spermatozoa. Letters (a,b) indicate significant differences within the same line (p < 0.05). Data are means (+/− SEM) of 4 independent replicates, representing approximately 7,200 +/− 256 spermatozoa analyzed on a total of 36 CASA fields.