Table 5.
Effects of live yeast or live yeast combined with zinc oxide on serum antioxidant status of nursery pigs.
| Items 2 | CTR 1 | CTC-ZnO 1 | LY 1 | LY-ZnO 1 | SEM | p-Value |
|---|---|---|---|---|---|---|
| MDA, nmol/mL | ||||||
| d 7 | 2.40 | 2.23 | 2.14 | 2.06 | 0.256 | 0.82 |
| d 14 | 2.16 | 1.91 | 2.11 | 2.18 | 0.211 | 0.80 |
| d 21 | 2.61 | 2.95 | 2.58 | 2.51 | 0.208 | 0.49 |
| d 28 | 4.36a | 3.37 b | 2.45 c | 2.25 c | 0.246 | <0.01 |
| SOD, U/mL | ||||||
| d 7 | 69.71 c | 74.92 b | 79.16 a | 75.71 b | 1.073 | <0.01 |
| d 14 | 72.62 b | 78.93 ab | 77.93 a | 81.50 a | 1.177 | <0.01 |
| d 21 | 77.68 b | 98.91a | 78.84 b | 99.65 a | 0.925 | <0.01 |
| d 28 | 82.35 c | 82.41 c | 88.53 b | 96.92 a | 1.114 | <0.01 |
| T-AOC, U/mL | ||||||
| d 7 | 2.59 a | 2.36 b | 2.56 a | 2.41 ab | 0.060 | 0.04 |
| d 14 | 2.56 | 2.46 | 2.44 | 2.45 | 0.043 | 0.21 |
| d 21 | 2.42 | 2.33 | 2.48 | 2.59 | 0.107 | 0.38 |
| d 28 | 2.43 | 2.40 | 2.33 | 2.38 | 0.027 | 0.12 |
| GSH-Px, nmol/L | ||||||
| d 7 | 20.88 | 19.22 | 21.00 | 19.64 | 0.560 | 0.09 |
| d 14 | 20.76 | 22.00 | 19.63 | 19.79 | 1.070 | 0.40 |
| d 21 | 20.41 | 20.19 | 20.82 | 20.03 | 1.417 | 0.98 |
| d 28 | 19.53 | 20.23 | 19.24 | 19.76 | 0.711 | 0.80 |
| CAT, U/mL | ||||||
| d 7 | 8.23 | 10.47 | 10.03 | 10.59 | 0.693 | 0.09 |
| d 14 | 8.22 | 8.54 | 8.60 | 8.63 | 1.615 | 0.70 |
| d 21 | 11.05 b | 12.57 a | 12.88 a | 12.67 a | 0.417 | 0.02 |
| d 28 | 11.29 | 9.90 | 11.30 | 10.87 | 0.904 | 0.65 |
Note: SEM is standard error of mean. n = 8 indicating the data was analyzed in 8 pigs per treatment. a–c Within a row, different superscripts mean significant difference (p < 0.05). 1 CTR: control; CTC-ZnO: chlortetracycline + zinc oxide; LY: live yeast; LY-ZnO: live yeast + zinc oxide. 2 MDA: malondialdehyde; SOD: superoxide dismutase; T-AOC: total antioxidant capacity; GSH-Px: glutathione peroxidase; CAT: catalase.