Table 6.

Effects of dietary supplemented with exogenous CAT on plasma antioxidant capacity of weaned piglets challenged with LPS (Exp. 2)¹

Items2	CON		CAT		P-values
	−LPS	+LPS	−LPS	+LPS	CAT	LPS	CAT × LPS
CAT, U/mL
0 h	16.38 ± 0.68	15.72 ± 0.74	19.29 ± 0.78	18.19 ± 0.72	0.002	0.242	0.762
4 h	17.50 ± 0.64	11.61 ± 0.65	20.72 ± 1.70	14.27 ± 0.57	0.009	<0.001	0.860
T-SOD, U/mL
0 h	29.03 ± 1.09	30.75 ± 0.74	32.77 ± 1.15	31.76 ± 1.04	0.030	0.731	0.195
4 h	27.37 ± 0.93	31.00 ± 0.80	32.40 ± 0.71	35.21 ± 1.01	<0.001	0.001	0.644
GSH-Px, U/mL
0 h	905.99 ± 23.10	945.10 ± 13.34	902.25 ± 21.62	954.31 ± 28.72	0.978	0.087	0.866
4 h	1,074.70 ± 14.92a	1,017.46 ± 24.76b	1,086.03 ± 8.92a	1,110.59 ± 11.44a	0.398	0.013	0.045
T-AOC, U/mL × 10
0 h	5.66 ± 0.09	5.80 ± 0.05	5.71 ± 0.05	5.74 ± 0.05	0.988	0.232	0.403
4 h	5.77 ± 0.04	5.88 ± 0.02	5.60 ± 0.13	5.82 ± 0.04	0.117	0.030	0.491
MDA, mmol/mL
0 h	11.05 ± 1.05	12.27 ± 1.06	9.42 ± 1.46	8.82 ± 1.09	0.043	0.791	0.447
4 h	15.38 ± 1.56	21.37 ± 2.17	10.51 ± 1.07	13.83 ± 1.49	0.001	0.009	0.419

¹CON, piglets fed basal diet; CAT, piglets fed basal diet supplemented with 2,000 mg/kg exogenous CAT production; −LPS, piglets not challenged with LPS; +LPS, piglets challenged with LPS; CAT × LPS, interaction between CAT and LPS.

²0 h and 4 h, 0 and 4 h after injecting LPS or saline.

^a,bMeans with different superscripts differ (P < 0.05).

Values are mean ± standard error (n = 6). Differences between treatments were considered significant at P < 0.05.