Table 6.
Serum biochemical indices and antioxidant status of growing rabbits fed diets supplemented with different levels of lysozyme.
| Parameters | Lysozyme, mg/kg Diet | SEM | p-Value | ||||
|---|---|---|---|---|---|---|---|
| LYZ0 | LYZ50 | LYZ100 | LYZ150 | Linear | Quadratic | ||
| Serum biochemical indices | |||||||
| TL, mg/dL | 354.8 a | 348.5 b | 349.0 b | 341.2 b | 3.85 | 0.03 | 0.05 |
| PL, mg/dL | 138.3 b | 141.9 a | 146.7 a | 144.2 a | 2.16 | 0.05 | 0.05 |
| TG, mg/dL | 71.9 a | 63.3 b | 58.4 bc | 55.2 c | 4.52 | 0.02 | 0.03 |
| TC, mg/dL | 99.2 a | 93.9 b | 90.2 b | 91.9 b | 3.06 | 0.01 | 0.02 |
| HDL, mg/dL | 34.2 b | 45.3 a | 47.5 a | 45.7 a | 5.58 | 0.05 | 0.03 |
| LDL, mg/dL | 50.6 a | 35.9 b | 30.9 c | 35.1 b | 5.37 | 0.05 | 0.01 |
| vLDL, mg/dL | 14.4 a | 12.7 b | 11.7 c | 11.1 c | 0.58 | 0.02 | 0.03 |
| HDL:TC ratio | 0.35 b | 0.44 a | 0.43 a | 0.43 a | 0.05 | 0.05 | 0.13 |
| LDL:TC ratio | 0.51 a | 0.38 b | 0.34 b | 0.38 b | 0.14 | 0.05 | 0.13 |
| HDL:LDL ratio | 0.68 c | 1.26 b | 1.53 a | 1.30 b | 0.11 | 0.05 | 0.07 |
| LDL:HDL ratio | 1.48 a | 0.79 b | 0.65 c | 0.77 b | 0.02 | 0.05 | 0.07 |
| Antioxidant enzymatic activity | |||||||
| TAC, mmol/L | 2.20 c | 2.75 b | 3.15 a | 3.10 a | 0.16 | 0.001 | 0.01 |
| SOD, U/L | 1.46 c | 1.85 b | 2.27 a | 2.89 a | 0.37 | 0.001 | 0.01 |
| GST, U/L | 116.24 c | 136.74 b | 156.85 a | 153.28 a | 6.42 | 0.001 | 0.01 |
| CAT, U/L | 0.22 c | 0.24 b | 0.24 a | 0.24 a | 0.01 | 0.001 | 0.01 |
| MDA, μmol/L | 2.06 a | 1.51 b | 1.21 bc | 1.11 c | 0.68 | 0.002 | 0.03 |
a–c Means within a row with different superscripts are significantly different (p < 0.05). TL, Total lipids; PL, Phosolipids; TG, Triglyceride; TC, Total cholesterol; HDL, High-density lipoprotein; LDL, Low-density lipoprotein; vLDL, very low-density lipoproteins; TAC, Total antioxidant capacity; SOD, Superoxide dismutase; GST, Glutathione S-transferase; CAT, Catalase; MDA, Malondialdehyde. Number of observation = 48; 12 rabbits per experimental group.