Table 2.
Analyzed amino acid composition of the experimental diets containing 6 concentrations of standardized ileal digestible lysine (as-fed basis, %).
| Item | Standardized ileal digestible lysine concentrations, % |
|||||
|---|---|---|---|---|---|---|
| 0.86 | 0.96 | 1.06 | 1.16 | 1.26 | 1.36 | |
| Indispensable amino acid | ||||||
| Arginine | 1.25 | 1.22 | 1.31 | 1.33 | 1.23 | 1.28 |
| Histidine | 0.42 | 0.43 | 0.43 | 0.43 | 0.39 | 0.42 |
| Isoleucine | 0.89 | 0.85 | 0.89 | 0.91 | 0.83 | 0.85 |
| Leucine | 1.44 | 1.39 | 1.48 | 1.48 | 1.34 | 1.41 |
| Lysine | 0.92 | 0.99 | 1.14 | 1.23 | 1.27 | 1.36 |
| Methionine | 0.53 | 0.55 | 0.57 | 0.56 | 0.51 | 0.51 |
| Phenylalanine | 0.86 | 0.84 | 0.89 | 0.89 | 0.81 | 0.86 |
| Threonine | 0.88 | 0.86 | 0.90 | 0.92 | 0.85 | 0.87 |
| Valine | 1.05 | 1.03 | 1.05 | 1.08 | 0.99 | 1.02 |
| Dispensable amino acid | ||||||
| Alanine | 0.75 | 0.75 | 0.79 | 0.80 | 0.71 | 0.76 |
| Aspartic acid | 1.65 | 1.59 | 1.72 | 1.72 | 1.56 | 1.63 |
| Cysteine | 0.46 | 0.44 | 0.45 | 0.45 | 0.47 | 0.44 |
| Glutamic acid | 6.38 | 5.88 | 5.94 | 5.95 | 5.43 | 5.35 |
| Glycine | 0.66 | 0.64 | 0.68 | 0.68 | 0.62 | 0.66 |
| Proline | 0.93 | 0.84 | 1.01 | 0.89 | 0.89 | 0.98 |
| Serine | 0.79 | 0.77 | 0.83 | 0.83 | 0.75 | 0.79 |
| Tyrosine | 0.59 | 0.56 | 0.59 | 0.60 | 0.54 | 0.58 |