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Table 2 Values of the distal branch of supra testicular artery Doppler indices including pulsatility index(PI),resistance index (RI),testicular volume (cm3),and percentage of colored area in the pampiniform plexus in the melatonin treated male compared to the normal dogs. Data are obtained as mean ± SEM with sample size = 12 × 6 = 72

From: Single melatonin injection enhances the testicular artery hemodynamic, reproductive hormones, and semen parameters in German shepherd dogs

Days

Supra-testicular A PI

Supra-testicular A RI

Testicular volume (cm3)

Plexus colored area%

MEL

Control

MEL

Control

MEL

Control

MEL

Control

D-15

1.22 ± 0.01

1.21 ± 0.01

0.88 ± 0.01

0.88 ± 0.02

10.65 ± 0.21

11.03 ± 2.01

70.21 ± 2.55

70.33 ± 6.21

D 0

1.22 ± 0.01

1.22 ± 0.01

0.91 ± 0.01

0.89 ± 0.02

10.69 ± 0.51

11.21 ± 1.36

70.32 ± 3.25

70.28 ± 4.21

D 15

1.16 ± 0.01

1.16 ± 0.01

0.82 ± 0.01

0.88 ± 0.01

11.62 ± 0.09

10.95 ± 0.85

75.21 ± 4.08

73.69 ± 4.88

D 30

1.02 ± 0.01b

1.13 ± 0.02a

0.51 ± 0.01b

0.89 ± 0.01a

11.52 ± 0.07

10.99 ± 0.41

81.62 ± 2.91b

71.88 ± 3.58a

D 45

0.99 ± 0.02b

1.16 ± 0.02a

0.49 ± 0.01b

0.86 ± 0.02a

11.62 ± 0.14

11.21 ± 0.33

88.69 ± 5.88b

75.36 ± 7.21a

D 60

0.87 ± 0.02b

1.12 ± 0.01a

0.44 ± 0.01b

0.85 ± 0.01a

11.52 ± 0.88

11.56 ± 0.02

88.97 ± 7.21b

76.15 ± 3.81a

  1. Means with different (a, b) superscripts are significantly different P < 0.05
  2. A artery, PI pulsatility index, RI resistance index, MEL melatonin group