Table 3.
Nutrient specifications of 7 experimental diets (g/kg, as-is basis).
| Item | 1A | 2B | 3C | 4D | 5E | 6F | 7G |
|---|---|---|---|---|---|---|---|
| Metabolizable energy, MJ/kg | 12.60 | 12.60 | 12.60 | 12.60 | 12.60 | 12.60 | 12.60 |
| Crude protein | 215.0 | 197.5 | 180.0 | 162.5 | 197.5 | 180.0 | 162.5 |
| Starch | 351 | 389 | 436 | 472 | 323 | 294 | 313 |
| Calcium | 8.25 | 8.25 | 8.25 | 8.25 | 8.25 | 8.25 | 8.25 |
| Total phosphorus | 5.20 | 5.09 | 4.92 | 4.73 | 5.03 | 4.83 | 4.67 |
| Available phosphorus | 4.13 | 4.13 | 4.13 | 4.13 | 4.13 | 4.13 | 4.13 |
| Sodium | 1.80 | 1.94 | 2.00 | 2.00 | 1.80 | 2.00 | 2.00 |
| Potassium | 9.12 | 7.95 | 8.32 | 8.79 | 8.20 | 7.95 | 8.39 |
| Chloride | 2.18 | 1.34 | 1.77 | 2.19 | 1.35 | 1.43 | 1.83 |
| dEB, mEq/kg | 250 | 250 | 250 | 250 | 250 | 250 | 250 |
| Crude fat | 60.0 | 51.2 | 38.4 | 29.7 | 81.0 | 87.5 | 91.7 |
| Crude fibre | 27.0 | 26.5 | 25.1 | 23.2 | 24.9 | 22.4 | 21.0 |
| Digestible amino acids | |||||||
| Lysine | 11.00 | 11.00 | 11.00 | 11.00 | 11.00 | 11.00 | 11.00 |
| Methionine | 5.01 | 5.19 | 5.43 | 5.71 | 5.29 | 5.61 | 5.87 |
| Methionine + Cysteine | 8.14 | 8.14 | 8.14 | 8.14 | 8.14 | 8.14 | 8.14 |
| Threonine | 7.15 | 7.15 | 7.15 | 7.15 | 7.15 | 7.15 | 7.15 |
| Tryptophan | 2.51 | 2.24 | 1.91 | 1.82 | 2.27 | 1.97 | 1.82 |
| Isoleucine | 7.88 | 7.70 | 7.70 | 7.70 | 7.70 | 7.70 | 7.70 |
| Leucine | 13.88 | 12.39 | 11.77 | 11.77 | 12.53 | 11.77 | 11.77 |
| Arginine | 12.61 | 11.44 | 11.44 | 11.44 | 11.44 | 11.44 | 11.44 |
| Valine | 8.80 | 8.80 | 8.80 | 8.80 | 8.80 | 8.80 | 8.80 |
| Histidine | 4.74 | 4.23 | 3.63 | 3.63 | 4.28 | 3.72 | 3.63 |
| Phenylalanine | 9.18 | 8.16 | 6.98 | 5.75 | 8.20 | 7.15 | 5.90 |
dEB = dietary electrolyte balance.