Table 1 Functional parameters of spermatozoa and litter size of the high- and low-fertility groups

Litter size

13.97 ± 0.07*

11.17 ± 0.13

MOT, %

72.94 ± 18.26

70.19 ± 14.68

HYP, %

13.19 ± 6.80

12.67 ± 7.57

VCL, μm/s

134.59 ± 21.57

134.21 ± 25.00

VSL, μm/s

58.66 ± 9.32

65.51 ± 16.53

VAP, μm/s

69.96 ± 11.02

74.29 ± 14.75

LIN, %

43.87 ± 3.14

49.25 ± 7.96

BCF, Hz

13.75 ± 1.10

14.09 ± 1.28

WOB, %

52.10 ± 1.90

55.94 ± 5.31

ALH, μm

5.96 ± 0.92

6.01 ± 1.01

AR, %

2.68 ± 0.88

8.20 ± 6.95

F, %

65.24 ± 10.42

76.92 ± 9.32

B, %

32.08 ± 10.58

14.88 ± 2.80