Table 4.
Plasma concentration of Zn, Cu, Fe and Mn; total- and non-protein-bound thiols (TSH and NPSH, respectively); albumin (Alb); metalothionein 1 (MT); thiobarbituric acid reactive substances (TBARS); prooxidat-antioxidant balance (PAB); and plasma activity of alkaline phosphatase (ALP) in piglets fed diets differing in zinc and fibre source.
| Plasma | Dietary Treatment | SEM | Main Effects | Interaction | ||||
|---|---|---|---|---|---|---|---|---|
| C | ZnGly | PF | PF + ZnGly | Zn | Fibre | Zn × Fibre | ||
| Zn, mg/L | 0.842 | 0.877 | 0.836 | 0.963 | 0.025 | 0.18 | 0.50 | 0.44 |
| Cu, mg/L | 1.77 a | 1.90 a | 1.74 a | 1.47 b | 0.039 | 0.10 | 0.001 | 0.001 |
| Zn/Cu ratio | 0.476 a | 0.460 a | 0.478 a | 0.658 b | 0.022 | 0.01 | 0.002 | 0.003 |
| Fe, mg/L | 2.79 | 2.42 | 2.28 | 2.53 | 0.089 | 0.77 | 0.36 | 0.16 |
| Mn, µg/L | 5.28 | 4.93 | 5.22 | 5.43 | 0.220 | 0.88 | 0.65 | 0.57 |
| ALP, U/L | 548 a | 415 ab | 318 b | 392 ab | 27.97 | 0.54 | 0.02 | 0.04 |
| Alb, g/L | 30.5 | 32.2 | 31.7 | 37.4 | 1.014 | 0.06 | 0.09 | 0.28 |
| MT, µg/L | 13.9 | 14.1 | 14.4 | 13.9 | 0.110 | 0.53 | 0.52 | 0.15 |
| TSH, mmol/L | 0.346 A | 0.344 A | 0.251 B | 0.360 A | 0.014 | 0.06 | 0.13 | 0.03 |
| NPSH, mmol/L | 0.024 A | 0.020 A | 0.018 B | 0.020 A | 0.001 | 0.05 | 0.04 | 0.04 |
| TBARS, µmol/L | 0.41 | 0.53 | 0.45 | 0.41 | 0.026 | 0.36 | 0.43 | 0.14 |
| PAB, HK unit | 63.3 | 65.9 | 81.7 | 72.9 | 5.262 | 0.78 | 0.26 | 0.61 |
C: cellulose, ZnGly: zinc chelate of glycine hydrate, PF: potato fibre. a,b Means within lines with different superscript letters are significantly different (p < 0.05) using by Bonferroni’s post hoc test. A,B Means within lines with different superscript letters are significantly different (p < 0.05) using Fisher’s Least Significant Difference (LSD) post hoc test; Bold values denote statistical significance at the p < 0.05.