Table 2.
Analyzed nutrient content of experimental diets (as-fed basis)1
| SID Lys, % | High E:T ratio2 | Low E:T ratio2 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 0.82 | 0.92 | 1.02 | 1.12 | 1.22 | 0.82 | 0.92 | 1.02 | 1.12 | 1.22 | |
| Dry matter, % | 90.2 (87.0) | 90.1 (87.0) | 90.6 (87.0) | 90.5 (87.0) | 90.3 (87.0) | 90.3 (87.0) | 90.1 (87.0) | 90.5 (87.0) | 90.6 (87.0) | 90.3 (87.1) |
| Crude protein, % | 16.0 (15.3) | 15.7 (15.4) | 16.4 (15.5) | 16.4 (15.6) | 16.6 (15.8) | 17.1 (16.6) | 17.3 (16.7) | 17.2 (16.8) | 17.1 (16.9) | 17.2 (17.)) |
| Total amino acid, % | ||||||||||
| Lys | 0.78 (0.91) | 0.80 (1.02) | 0.96 (1.12) | 1.17 (1.22) | 1.19 (1.31) | 0.90 (0.92) | 0.96 (1.03) | 1.08 (1.13) | 1.18 (1.23) | 1.22 (1.32) |
| Met | 0.36 (0.40) | 0.37 (0.41) | 0.31 (0.41) | 0.29 (0.41) | 0.33 (0.40) | 0.31 (0.38) | 0.35 (0.39) | 0.25 (0.39) | 0.34 (0.39) | 0.29 (0.38) |
| Met + Cys | 0.61 (0.66) | 0.62 (0.67) | 0.50 (0.67) | 0.51 (0.67) | 0.54 (0.66) | 0.55 (0.67) | 0.63 (0.68) | 0.43 (0.68) | 0.61 (0.68) | 0.54 (0.66) |
| Thr | 0.54 (0.76) | 0.49 (0.71) | 0.54 (0.70) | 0.64 (0.70) | 0.59 (0.76) | 0.62 (0.77) | 0.63 (0.72) | 0.61 (0.72) | 0.63 (0.72) | 0.59 (0.77) |
| Arg | 0.84 (0.85) | 0.81 (0.85) | 0.80 (0.85) | 0.92 (0.85) | 0.92 (0.85) | 0.90 (1.01) | 0.90 (1.00) | 0.89 (1.00) | 0.91 (1.00) | 0.87 (1.00) |
| Ile | 0.62 (0.65) | 0.61 (0.65) | 0.62 (0.65) | 0.71 (0.65) | 0.70 (0.65) | 0.72 (0.67) | 0.70 (0.66) | 0.72 (0.66) | 0.72 (0.66) | 0.69 (0.66) |
| Leu | 1.31 (1.36) | 1.26 (1.36) | 1.28 (1.36) | 1.46 (1.36) | 1.45 (1.36) | 1.58 (1.50) | 1.55 (1.50) | 1.58 (1.50) | 1.58 (1.50) | 1.54 (1.50) |
| Val | 0.72 (0.75) | 0.71 (0.77) | 0.72 (0.76) | 0.83 (0.76) | 0.81 (0.75) | 0.82 (0.76) | 0.80 (0.77) | 0.82 (0.77) | 0.82 (0.72) | 0.80 (0.76) |
| His | 0.35 (0.44) | 0.35 (0.44) | 0.37 (0.44) | 0.43 (0.44) | 0.36 (0.44) | 0.41 (0.45) | 0.42 (0.45) | 0.37 (0.45) | 0.43 (0.44) | 0.41 (0.44) |
| Phe | 0.66 (0.70) | 0.65 (0.70) | 0.65 (0.70) | 0.76 (0.70) | 0.76 (0.70) | 0.82 (0.81) | 0.83 (0.81) | 0.82 (0.80) | 0.84 (0.80) | 0.81 (0.80) |
1Analyzed total amino acid content with calculated values in parentheses.
2E:T ratios of 0.36 (high ratio diets) and 0.33 (low ratio diets) reflect the amount of N in the diets coming from essential amino acids (E) and from all other components (T), with the higher ratio having a larger contribution of N from essential amino acids.
E:T, essential amino acid-nitrogen:total nitrogen ratio.