Table 2.

Semen characteristics (Progressive motility, viability, normal morphology, sperm cell concentration) in CoQ10 supplemented (CoQ10; n = 5) versus control (CON; n = 5) group at the studied time points (W0-W8) under heat stress conditions (THI: 88.3–94.4)

W	Progressive motility %		Viability %		Normal morphology %		Sperm cell concentration 109/mL
	CoQ10	CON	CoQ10	CON	CoQ10	CON	CoQ10	CON
W0	72.20 ± 1.33	70.00 ± 1.84	82.40 ± 1.11	83.20 ± 1.45	83.60 ± 2.66	82.60 ± 1.88	2.22 ± 0.02	2.26 ± 0.55
W1	69.00 ± 1.77	69.00 ± 1.55	76.00 ± 1.44	79.80 ± 1.65	82.40 ± 0.87	82.40 ± 0.88	2.45 ± 0.01	2.33 ± 0.07
W2	73.00 ± 1.65	70.00 ± 1.75	81.00 ± 0.54	79.60 ± 2.33	83.00 ± 0.58	84.40 ± 0.94	2.21 ± 0.01	2.24 ± 0.05
W3	78.00 ± 1.33*	73.00 ± 2.04	88.60 ± 1.27*	81.00 ± 1.45	89.40 ± 0.84*	83.60 ± 0.85	2.35 ± 0.01	2.26 ± 0.07
W4	79.00 ± 1.18*	71.00 ± 1.58	90.40 ± 1.22*	82.60 ± 1.05	88.40 ± 0.54*	83.40 ± 0.88	2.29 ± 0.02	2.14 ± 0.04
W5	80.00 ± 2.14*	68.00 ± 2.04	91.60 ± 1.44*	81.60 ± 1.97	89.60 ± 0.44*	83.00 ± 0.77	2.11 ± 0.01	1.97 ± 0.04
W6	81.00 ± 1.11*	72.00 ± 1.52	91.60 ± 1.41*	80.80 ± 1.55	91.40 ± 0.54*	82.60 ± 0.68	2.45 ± 0.01*	1.97 ± 0.05
W7	68.20 ± 1.44	69.20 ± 1.45	81.20 ± 1.21	79.80 ± 1.71	81.00 ± 0.74	83.00 ± 0.55	2.52 ± 0.02*	2.03 ± 0.04
W8	73.60 ± 1.01	72.40 ± 1.12	78.60 ± 1.74	80.80 ± 1.57	84.40 ± 0.55	84.00 ± 0.28	2.61 ± 0.01*	2.15 ± 0.05

THI = temperature humidity index, W = weeks. Data obtained as mean ± SEM. *Values in each measure are different at least at P < 0.05 between the two groups. The treatment effect (CoQ10 versus CON) showed a significant difference in sperm progressive motility % (P < 0.001), viability (P < 0.0001), and concentration (P < 0.0001), while the time effect showed a significant (P < 0.01) difference in sperm progressive motility, viability, normal morphology, and concentration