Table 4.
Effects of dietary crude protein levels on serum metabolites of lactating donkeys.
| Items | HF | WF | LP | SEM | p-Value |
|---|---|---|---|---|---|
| TP, g/L | 66.70 a | 62.38 a | 57.08 b | 1.505 | 0.010 |
| ALB, g/L | 35.21 a | 34.41 a | 29.49 b | 1.067 | 0.011 |
| BUN, mmol/L | 8.89 a | 8.31 a | 7.10 b | 0.251 | 0.002 |
| ALP, U/L | 176.30 | 174.08 | 188.42 | 4.542 | 0.112 |
| GLU, mmol/L | 5.18 a | 5.02 ab | 4.71 b | 0.107 | 0.018 |
| NEFA, umol/L | 0.17 b | 0.19 b | 0.28 a | 0.017 | 0.002 |
| BHBA, mmol/L | 0.36 b | 0.39 b | 0.43 a | 0.011 | 0.013 |
| TC, mmol/L | 1.85 | 1.88 | 2.05 | 0.090 | 0.264 |
| Ca, mg/L | 2.73 | 2.78 | 2.78 | 0.059 | 0.848 |
| P, mg/L | 1.29 | 1.33 | 1.30 | 0.045 | 0.778 |
HP, high crude protein; MP, medium crude protein; LP, low crude protein; SEM = standard error of least square means; a, b means within the same row not followed by the same letters are significantly different at p < 0.05.