. 2023 May 25;102(8):102813. doi: 10.1016/j.psj.2023.102813

Table 4.

Effect of EO on the serum antioxidative parameters of Muscovy ducks (n = 6).

Items	CON	EO100	EO200	EO300	P value
Items	CON	EO100	EO200	EO300	EO	Linear	Quadratic
28 d of age
T-AOC (U/mL)	0.40 ± 0.02^b	0.42 ± 0.02^ab	0.45 ± 0.04^a	0.44 ± 0.03^ab	0.015	0.008	0.106
CAT (U/mL)	3.25 ± 0.36^b	3.57 ± 0.43^ab	4.00 ± 0.60^a	3.70 ± 0.23^ab	0.044	0.032	0.091
GSH-Px (U/mL)	547.45 ± 27.32^b	586.11 ± 31.13^ab	609.15 ± 30.16^a	599.33 ± 32.04^a	0.011	0.004	0.063
SOD (U/mL)	232.07 ± 22.83^b	238.33 ± 20.72^b	287.12 ± 31.14^a	262.95 ± 34.36^ab	0.010	0.012	0.196
MDA (nmol/mL)	6.10 ± 0.87^a	5.15 ± 0.68^ab	4.24 ± 0.75^b	4.46 ± 0. 81^b	0.002	0.001	0.079
56 d of age
T-AOC (U/mL)	0.59 ± 0.02^b	0.63 ± 0.02^a	0.65 ± 0.02^a	0.65 ± 0.02^a	<0.000	<0.000	0.026
CAT (U/mL)	5.27 ± 0.69^b	5.89 ± 0.49^ab	6.11 ± 0.31^a	6.05 ± 0.34^a	0.026	0.008	0.101
GSH-Px (U/mL)	593.75 ± 41.57^b	644.05 ± 46.15^ab	684.63 ± 66.45^a	653.09 ± 49.32^ab	0.046	0.031	0.067
SOD (U/mL)	259.59 ± 20.79^b	279.39 ± 24.09^ab	303.68 ± 23.29^a	294.47 ± 31.52^ab	0.035	0.011	0.287
MDA (nmol/mL)	5.83 ± 0.73^a	4.98 ± 0.58^ab	4.58 ± 0.61^b	4.74 ± 0.74^b	0.019	0.007	0.080

^a,b

Values within a row with different letters differ significantly (P < 0.05).

Abbreviations: CAT, catalase; GSH-Px, glutathione peroxidase; MDA, malonaldehyde; SOD, superoxide dismutase; T-AOC, total antioxidant capacity.