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

Motility (%)*

66.8 +/− 2.6^a

67 +/− 2.3^a

68.3 +/− 1.4^a

0.71

Progressive (%)**

51.4 +/− 1.9^a

53.4 +/−3.4^a

58.0 +/− 1.2^b

0.03

Rapid (%)**

68.4 +/− 1.9^a

69 +/− 2.7^a

75.1 +/− 1.2^b

0.02

VAP (μm/s)

80.5 +/− 2.3^a

79.5 +/− 2.7^a

90.2 +/− 1.5^b

0.03

VSL (μm/s)

51.5 +/− 1.8^a

55.2 +/− 3.4^a,b

57.6 +/− 1.4^b

0.04

VCL(μm/s)

175.0 +/− 3.6^a

172 +/− 4.6^a

183.7 +/− 2.3^b

0.05

STR (VSL/VAP, %)

61.0 +/− 0.9^a

62 +/− 2.6^a

61.4 +/− 0.7^a

0.99

LIN (VSL/VCL, %)

29.6 +/− 0.6^a

32 +/− 1.7^a

31.7 +/− 0.6^a

0.39