. 2020 Jul 3;99(10):4892–4903. doi: 10.1016/j.psj.2020.06.028

Table 5.

ROS, TAOC, MDA, GPX, CAT, and SOD activity in the liver of broiler chickens fed with oxidized oil and different concentrations of quercetin.

Item		Treatment¹						P-value, t-test	Linear	Quadratic	P-value
Item		Ctr	Ox	OxL	OxM	OxH	SEM	P-value, t-test	Linear	Quadratic	P-value
11 D	ROS²	7.88	7.96∗^,a	7.87^b	7.91^a,b	7.92^a,b	0.018	0.014	0.426	0.016	0.018
	TAOC³	1.20	1.25	1.18	1.20	1.33	0.024	0.382	0.200	0.161	0.298
	MDA⁴	0.55	1.15∗^,a,b	1.42^a	0.80^b	0.98^b	0.073	<0.001	0.120	0.605	0.028
	GPX⁵	15.27	13.89^a	13.51^a	14.96^a	10.68^b	0.395	0.155	0.003	0.012	0.001
	CAT⁵	7.24	12.18∗	12.31	11.68	11.80	0.595	0.016	0.751	0.926	0.977
	SOD⁵	145.96	163.56∗	150.44	151.5	162.79	2.760	0.020	0.788	0.076	0.313
18 D	ROS²	8.22	8.19	8.33	8.26	8.21	0.023	0.663	0.759	0.082	0.173
	TAOC³	1.12	1.19^a	1.04^b	0.98^b	1.02^b	0.023	0.369	0.034	0.021	0.028
	MDA⁴	1.35	1.67^a	1.04^b	0.99^b	1.32^a,b	0.076	0.255	0.226	0.001	0.004
	GPX⁵	16.76	15.243^a,b	12.86^c	13.20^b,c	16.50^a	0.410	0.185	0.062	0.001	0.003
	CAT⁵	7.51	9.79	10.31	9.95	10.02	0.387	0.101	0.942	0.828	0.974
	SOD⁵	162.98	176.46^a	150.71^c	156.38^b,c	169.83^a,b	2.772	0.141	0.967	0.001	0.006
42 D	ROS²	8.40	8.35	8.29	8.08	8.36	0.057	0.346	0.992	0.260	0.624
	TAOC³	1.30	1.34^b	1.72^a	1.49^a,b	1.24^b	0.047	0.730	0.115	0.012	0.009
	MDA⁴	1.25	1.50	1.82	1.46	1.11	0.103	0.385	0.120	0.330	0.238
	GPX⁵	24.46	23.76	28.22	26.47	22.35	0.762	0.786	0.226	0.026	0.062
	SOD⁵	209.06	212.23	225.21	205.14	196.59	7.240	0.808	0.060	0.469	0.104

∗Means were significantly different compared with the control. Means within 4 treatments (Ox, OxL, OxM, and OxH) lacking a common superscript differ (P < 0.05).

Abbreviations: CAT, catalase; Ctr, control group; GPX, glutathione peroxidase; MDA, malondialdehyde; ROS, reactive oxygen species; SOD, superoxide dismutase; TAOC, total antioxidant capacity.

Ctr: basal diet; Ox: basal diet with oxidized oil; OxL: basal diet supplemented with oxidized oil and 200 ppm of quercetin; OxM: basal diet supplemented with oxidized oil and 400 ppm of quercetin; OxH: basal diet supplemented with oxidized oil and 800 ppm of quercetin.

ROS: log (fluorescence value of ROS).

TAOC: U/mg of protein.

⁴

MDA: nM/mg of protein.

⁵

GPX, SOD, CAT: U/mg of protein.