Table 4 Motility parameters of the canine post-thaw sperm after cryopreservation in extenders containing different levels of melatonin versus the controls

TM

49.52 ± 5.69 ^b

35.82 ± 7.65 ^ab

25.57 ± 3.21 ^a

54.64 ± 8.24 ^b

50.45 ± 6.90 ^b

PM

21.41 ± 3.06 ^d

13.07 ± 2.58 ^bc

6.76 ± .77 ^ab

20.9 ± 2.35 ^d

18.90 ± 1.78 ^cd

VCL

20.03 ± 2.68 ^c

13.70 ± 3.26 ^ac

8.35 ± 1.00 ^a

18.27 ± 3.12 ^bc

19.76 ± 2.25 ^bc

VAP

11.00 ± 1.24 ^c

7.08 ± 1.61 ^ac

4.32 ± .55 ^a

10.50 ± 2.17 ^bc

10.14 ± .97 ^bc

VSL

7.65 ± .92 ^c

4.57 ± 1.00 ^ac

2.65 ± .35 ^a

6.67 ± 1.31 ^bc

6.50 ± .45 ^bc

ALH

1.30 ± .19 ^ab

1.05 ± .22 ^ab

.73 ± .09 ^a

1.47 ± .31 ^b

1.38 ± .20 ^b

BCF

2.23 ± .39 ^ab

1.47 ± .43 ^ab

.75 ± .10 ^a

2.31 ± .60 ^b

2.39 ± .33 ^b

MAD

23.72 ± 3.59 ^ab

15.70 ± 4.16 ^ab

8.99 ± 1.07 ^a

24.93 ± 6.68 ^b

23.26 ± 2.65 ^b

STR

69.48 ± 2.23 ^b

64.68 ± 1.24 ^a

61.05 ± .70 ^a

64.04 ± 1.10 ^a

64.62 ± 1.83 ^a

LIN

38.61 ± 2.11 ^b

33.63 ± 1.25 ^a

31.52 ± .60 ^a

36.25 ± 2.08 ^ab

33.43 ± 1.61 ^a

WOB

55.47 ± 1.65

51.94 ± .98

51.62 ± .52

56.65 ± 3.41

51.65 ± 1.12