Table 3.
Nutritional composition of piglet diets used in Exp. 2 (%).
| Item | Diets1 |
NRC2012 | ||
|---|---|---|---|---|
| Control | LL | SL | ||
| CP | 19.90 | 16.94 | 16.93 | 19.50 |
| DE | 3,488 | 3,434 | 3,424 | 3,400 to 3,450 |
| ME | 3,338 | 3,303 | 3,294 | 3,280 to 3,400 |
| NE | 2,501 | 2,508 | 2,507 | 2,412 |
| Ca | 0.55 | 0.54 | 0.53 | 0.68 to 0.70 |
| TP | 0.59 | 0.60 | 0.60 | 0.55 to 0.60 |
| Lysine | 1.35 | 1.14 | 1.33 | 1.40 |
| Methionine + Cysteine | 0.78 | 0.66 | 0.8 | 0.79 |
| Tyrosine | 0.84 | 0.72 | 0.83 | 0.87 |
| Tryptophan | 0.22 | 0.19 | 0.21 | 0.23 |
| SID M + C | 0.68 | 0.57 | 0.69 | 0.68 |
| SID Threonine | 0.73 | 0.62 | 0.74 | 0.73 |
| SID Tryptophan | 0.21 | 0.18 | 0.20 | 0.20 |
| SID Lysine | 1.24 | 1.04 | 1.24 | 1.23 |
| Lysine:CP | 6.23 | 6.14 | 7.23 | 6.15 |
DE = digestible energy; ME = metabolizable energy; NE = net energy; SID = standard ileal digestible; TP = total phosphorus; M + C = methionine and cysteamine; CP = crude protein.
1
Control, a normal protein containing 20% CP; LL, a low ratio of Lys to CP diet containing 17% CP; SL, a standard ratio of Lys to CP diet containing 17% CP.