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

Table 3 Testicular morphological echo-texture Doppler parameters, scrotal circumference and hormonal levels (estradiol17-ß + testosterone) in addition to nitric oxide expressed as mean ± SEM in Mel treated males compared to the normal ones at day 0 and day 60

Parameter	MEL treated (n = 6)		Normal control(n = 6)
Parameter	D0	D60	D0	D60
Testicular volume	6.63 ± 0.02	7.02 ± 0.01	6.66 ± 0.01	6.98 ± 0.22
Scrotal circumference(cm)	11.01 ± 1.58	13.94 ± 1.25	13.25 ± 1.54	13.54 ± 1.65
PSV(cm/sec)	17.39 ± 1.84^a	20.15 ± 0.99^b	18.09 ± 2.14	18.32 ± 2.05
EDV(cm/sec)	4.04 ± 0.81	4.98 ± 0.01	3.66 ± 0.02	4.01 ± 0.04
Intra testicular colored area (pixels)	4985 ± 26.32^a	5999 ± 45.21^b	4865 ± 12.54	4556 ± 11.82
Testosterone (ng/mL)	6.22 ± 0.05^a	8.98 ± 0.14^b	7.02 ± 1.02	7.99 ± 0.04
Estradiol 17-ß (pg/mL)	32.15 ± 1.54^a	55.21 ± 2.31^b	26.54 ± 41.25	24.11 ± 11.32
NO (µmol/L)	37.11 ± 2.15^a	64.25 ± 5.66 ^b	62.24 ± 9.02	68.02 ± 10.21

Means with different (a, b) superscripts are significantly different at P < 0.05 within rows in MEL treated males
PSV cm/sec peak systolic velocity, NO Nitric oxide, and EDV cm/sec end diastolic velocity

ISSN: 1746-6148