Table 6.
Effect of age on standardized ileal digestibility of amino acids in wheat fed to broilers.
| Item | Day 13 | Day 28 | SEM | P-value |
|---|---|---|---|---|
| Indispensable amino acids | ||||
| Arg | 93.38 | 89.90 | 0.41 | <0.01 |
| His | 92.89 | 89.37 | 0.41 | <0.01 |
| Ile | 95.49 | 93.46 | 0.41 | 0.013 |
| Leu | 95.09 | 92.02 | 0.39 | <0.01 |
| Lys | 87.88 | 81.35 | 0.75 | <0.01 |
| Met | 92.79 | 90.03 | 0.38 | <0.01 |
| Phe | 94.47 | 91.78 | 0.40 | 0.001 |
| Thr | 92.82 | 88.92 | 0.74 | 0.008 |
| Trp | 91.65 | 87.65 | 0.53 | <0.01 |
| Val | 93.75 | 89.91 | 0.47 | <0.01 |
| IAA | 93.02 | 89.44 | 0.46 | <0.01 |
| Dispensable amino acids | ||||
| Ala | 91.09 | 84.88 | 0.64 | <0.01 |
| Asp | 91.58 | 86.79 | 0.61 | <0.01 |
| Cys | 93.09 | 91.61 | 0.38 | 0.055 |
| Glu | 97.98 | 96.02 | 0.19 | <0.01 |
| Gly | 92.35 | 88.75 | 0.50 | <0.01 |
| Pro | 98.22 | 96.84 | 0.20 | <0.01 |
| Ser | 95.05 | 93.41 | 0.40 | 0.041 |
| Tyr | 95.04 | 95.63 | 0.41 | 0.474 |
| DAA | 94.30 | 91.74 | 0.39 | 0.001 |
| TAA | 93.59 | 90.46 | 0.43 | <0.01 |
Abbreviations: Ala, Alanine; Asp, Aspartic acid; Arg, Arginine; CV, coefficient of variation; Cys, Cystine; DAA, dispensable amino acid; Glu, Glutamic acid; Gly, Glycine; His, Histidine; IAA, Dispensable amino acid; Ile, Isoleucine; Leu, Leucine; Lys, Lysine; Max, maximum; Min, minimum; Met, Methionine; Phe, Phenylalanine; Pro, Proline; Ser, Serine; TAA, Total amino acid; Thr, Threonine; Trp, Tryptophan; Tyr, Tyrosine; Val, Valine.