Table 1 Effect of supplementation of semen extender with different concentration of vitamin D on frozen–thawed spermatozoa kinematics in normozoopsermic and asthenozoopsermic Holstein bulls

DCL(µm)*

32.21 ± 1.82

32.21 ± 0.42

30.88 ± 2.04

33.46 ± 1.37

DSL (µm)*

12.96 ± 0.89

12.81 ± 0.45

11.93 ± 1.67

13.43 ± 1.07

DAP (µm)*

16.18 ± 0.98

16.17 ± 0.19

15.26 ± 1.55

16.87 ± 0.93

VCL(µm/s)*

88.45 ± 2.64^ab

76.06 ± 1.11^a

86.53 ± 6.95^ab

97.15 ± 3.01^b

VSL (µm/s) *

39.83 ± 1.10^ab

32.51 ± 1.67^a

37.48 ± 4.43^ab

42.07 ± 1.92^b

VAP (µm/s) *

47.43 ± 1.22^ab

39.74 ± 1.43^a

45.44 ± 4.45^ab

50.94 ± 1.84^b

BCF(Hz)*

11.77 ± 0.70

10.79 ± 0.13

12.04 ± 1.05

12.71 ± 0.45

ALH(µm)*

1.10 ± 0.06

1.02 ± 0.02

1.04 ± 0.07

1.16 ± 0.04

STR(%)

0.84 ± 0.00

0.82 ± 0.01

0.82 ± 0.02

0.83 ± 0.01

LIN(%)

0.45 ± 0.00

0.43 ± 0.02

0.43 ± 0.02

0.43 ± 0.01

WOB(%)

0.53 ± 0.00

0.52 ± 0.01

0.53 ± 0.01

0.52 ± 0.00