Table 8.
The effects of feed additives (sodium metabisulphite plus protease) (mg/mL) in wheat-based diets on concentrations of free amino acids and glucose in the portal circulation of broiler chickens at 28 days post–hatch.
| Item | Control | Feed additives | SEM | Significance (P-value) |
|---|---|---|---|---|
| Arginine | 108.9 | 85.4 | 12.117 | 0.200 |
| Histidine | 12.2 | 2.3 | 0.923 | 0.023 |
| Isoleucine | 18.6 | 15.5 | 0.976 | 0.048 |
| Leucine | 26.1 | 23.7 | 1.153 | 0.180 |
| Lysine | 47.0 | 39.3 | 3.321 | 0.133 |
| Methionine | 15.8 | 12.5 | 0.829 | 0.017 |
| Phenylalanine | 21.0 | 17.9 | 1.116 | 0.075 |
| Threonine | 63.8 | 50.8 | 7.446 | 0.247 |
| Tryptophan | 6.2 | 6.0 | 0.477 | 0.791 |
| Valine | 27.8 | 23.3 | 1.305 | 0.037 |
| Alanine | 88.7 | 66.7 | 5.911 | 0.025 |
| Aspartic acid | 13.1 | 23.5 | 3.830 | 0.084 |
| Asparagine | 30.0 | 21.4 | 4.474 | 0.202 |
| Cystine | 13.6 | 9.9 | 0.852 | 0.001 |
| Glutamic acid | 47.9 | 52.2 | 2.680 | 0.280 |
| Glutamine | 196.6 | 143.8 | 10.734 | 0.006 |
| Glycine | 51.9 | 37.7 | 2.463 | 0.002 |
| Proline | 69.2 | 48.3 | 5.099 | 0.016 |
| Serine | 59.2 | 48.1 | 3.299 | 0.039 |
| Tyrosine | 27.6 | 27.2 | 2.400 | 0.909 |
| Glucose, mmol/L | 17.4 | 19.3 | 1.427 | 0.365 |