Table 4.
Effect of HT and ZnO individual supplementation or combination on serum antioxidant and immune indexes of weaned pigs.
| Item 1 | CON 2 | ZnO 2 | HT 2 | HT + ZnO 2 | SEM 3 | p-Value |
|---|---|---|---|---|---|---|
| d 14 | ||||||
| CAT(U/mL) | 24.36 c | 29.18 bc | 33.19 b | 47.96 a | 1.17 | <0.01 |
| GSH-Px (U/mL) | 684 c | 855 b | 919 b | 1049 a | 24.80 | <0.01 |
| SOD (U/mL) | 71.72 ab | 66.14 ab | 64.16 b | 73.95 a | 2.21 | 0.03 |
| T-AOC (U/mL) | 13.31 ab | 12.80 ab | 12.78 b | 15.90 a | 0.97 | 0.02 |
| MDA (nmol/mL) | 5.48 a | 4.84 ab | 4.63 b | 2.71 c | 0.20 | <0.01 |
| IgA (g/L) | 1.16 b | 1.38 ab | 1.42 ab | 1.60 a | 0.09 | 0.03 |
| IgM (g/L) | 3.13 c | 3.38 bc | 3.48 b | 3.96 a | 0.06 | <0.01 |
| IgG (g/L) | 20.67 | 21.25 | 21.56 | 23.11 | 0.62 | 0.08 |
| d 28 | ||||||
| CAT (U/mL) | 22.97 b | 27.72 b | 31.15 ab | 39.47 a | 2.73 | 0.01 |
| GSH-Px (U/mL) | 666 b | 806 a | 850 a | 914 a | 28.48 | <0.01 |
| SOD (U/mL) | 49.05 b | 68.24 a | 65.06 ab | 49.08 b | 4.38 | 0.02 |
| T-AOC (U/mL) | 8.17 c | 9.64 bc | 11.89 ab | 14.19 a | 0.55 | <0.01 |
| MDA (nmol/mL) | 5.69 a | 5.21 a | 4.94 a | 3.82 b | 0.24 | <0.01 |
| IgA (g/L) | 1.18 b | 1.31 ab | 1.36 ab | 1.47 a | 0.07 | 0.07 |
| IgM (g/L) | 3.02 c | 3.20 bc | 3.28 b | 3.87 a | 0.05 | <0.01 |
| IgG (g/L) | 20.01 b | 20.21 b | 20.64 ab | 22.56 a | 0.52 | 0.02 |
1 T-AOC = total antioxidant capacity; MDA = malondialdehyde; CAT = catalase; SOD = superoxide dismutase; GSH-Px = glutathione peroxidase; Ig = immunoglobulins. 2 CON, the control; ZnO, zinc oxide; HT, hydrolyzed tannic acid; HT + ZnO, the mixture of zinc oxide and hydrolyzed tannic acid. 3 SEM means standard error of the mean. a–c Different superscripts within a row indicate a significant difference (p < 0.05).