. 2022 Nov 14;18:403. doi: 10.1186/s12917-022-03487-y

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

Days	Supra-testicular A PI		Supra-testicular A RI		Testicular volume (cm³)		Plexus colored area%
Days	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 ± 0.01^b	1.13 ± 0.02^a	0.51 ± 0.01^b	0.89 ± 0.01^a	11.52 ± 0.07	10.99 ± 0.41	81.62 ± 2.91^b	71.88 ± 3.58^a
D 45	0.99 ± 0.02^b	1.16 ± 0.02^a	0.49 ± 0.01^b	0.86 ± 0.02^a	11.62 ± 0.14	11.21 ± 0.33	88.69 ± 5.88^b	75.36 ± 7.21^a
D 60	0.87 ± 0.02^b	1.12 ± 0.01^a	0.44 ± 0.01^b	0.85 ± 0.01^a	11.52 ± 0.88	11.56 ± 0.02	88.97 ± 7.21^b	76.15 ± 3.81^a

Means with different (a, b) superscripts are significantly different P < 0.05

A artery, PI pulsatility index, RI resistance index, MEL melatonin group