Table 4.
Impact of dietary supplementation of selenium on liver antioxidant enzymes and lipid peroxidation adduct (malondialdehyde, MDA) in piglets in response to diquat challenge (n 6)
(Mean values with their standard errors; six observations per least square mean value)
| Items | Diquat challenge | sem | P | ||||
|---|---|---|---|---|---|---|---|
| NC | PC | SS | SC | SY | |||
| SOD (U/mg protein) | 0·245a | 0·124b | 0·192a,b | 0·244a | 0·181a,b | 0·043 | <0·05 |
| GPx (nmol/min per mg protein) | 23·81a | 19·98b | 17·87c | 20·97b | 26·02a | 1·59 | <0·05 |
| TAC (mmol Trolox/mg protein) | 0·031 | 0·028 | 0·023 | 0·034 | 0·032 | 0·01 | 0·24 |
| Catalase (µmol formaldehyde/min per mg protein) | 170·76 | 281·76 | 173·04 | 223·12 | 210·58 | 36·86 | 0·07 |
| MDA (µmol/mg protein) | 0·943 | 1·136 | 0·822 | 1·011 | 0·875 | 0·69 | 0·09 |
NC, negative control; PC, positive control; SS, sodium selenite; SC, soyabean protein-chelated Se; SY, selenised yeast; SOD, superoxide dismutase; GPx, glutathione peroxidase; TAC, total antioxidant capacity; MDA, malondialdehyde.
a,b,c Mean values within a row with unlike superscript letters were significantly different (P < 0·05).