Table 2.
Composition of experimental diets in experiment 1 (as-fed basis)1
| Ingredient, % | Phase 1 | Phase 2 | Phase 3 |
|---|---|---|---|
| Corn | 40.32 | 56.37 | 66.12 |
| Soybean meal (46.5% CP) | 18.98 | 24.31 | 29.00 |
| Dried whey | 25.00 | — | — |
| Whey permeate, 80% lactose | — | 9.00 | — |
| Corn DDGS2, 7.5% oil | 5.00 | — | — |
| Enzymatically treated soybean meal3 | 5.00 | 5.00 | — |
| Corn oil | 2.00 | 1.00 | 1.00 |
| Calcium carbonate | 0.50 | 0.75 | 0.75 |
| Monocalcium P (21% P) | 0.80 | 1.10 | 0.95 |
| Sodium chloride | 0.30 | 0.55 | 0.60 |
| L-Lys-HCl | 0.55 | 0.55 | 0.53 |
| DL-Met | 0.25 | 0.25 | 0.22 |
| L-Thr | 0.22 | 0.25 | 0.23 |
| L-Trp | 0.05 | 0.04 | 0.04 |
| L-Val | 0.17 | 0.17 | 0.16 |
| Vitamin premix with phytase | 0.25 | 0.25 | 0.25 |
| Trace mineral premix | 0.15 | 0.15 | 0.15 |
| Choline chloride | 0.04 | — | — |
| Zinc oxide | 0.41 | 0.25 | — |
| Phytase4 | 0.02 | 0.02 | 0.02 |
| O3 trial feed5 | +/− | +/− | +/− |
| Calculated analysis | |||
| Standardized ileal digestible (SID) AA, % | |||
| Lys | 1.40 | 1.35 | 1.30 |
| Ile:Lys | 55 | 54 | 54 |
| Leu:Lys | 110 | 108 | 114 |
| Met and Cys:Lys | 58 | 58 | 58 |
| Thr:Lys | 64 | 63 | 64 |
| Trp:Lys | 19.5 | 19.1 | 18.9 |
| Val:Lys | 70 | 70 | 71 |
| His:Lys | 32 | 34 | 36 |
| Total Lys, % | 1.53 | 1.48 | 1.44 |
| NE, kcal/kg | 2,588 | 2,522 | 2,489 |
| SID Lys:NE, g/Mcal | 5.41 | 5.35 | 5.22 |
| CP, % | 20.5 | 20.3 | 20.2 |
| Ca, % | 0.65 | 0.69 | 0.64 |
| P, % | 0.66 | 0.63 | 0.58 |
| Standardized total tract digestible (STTD) P, % | 0.58 | 0.51 | 0.46 |
| Ca:P | 0.99 | 1.10 | 1.10 |
| EFA, % | 2.34 | 1.91 | 2.06 |
| Alpha-linolenic acid % | 0.08 | 0.08 | 0.08 |
| Linoleic acid % | 2.26 | 1.83 | 1.98 |
| Omega-6:3 | 27.3 | 23.0 | 24.4 |
1Phase 1 diets were fed from days 0 to 13 (~5.8 to 7.3 kg BW). Phase 2 diets were fed from days 13 to 22 (~7.3 to 11.5 kg BW). Phase 3 was fed from days 22 to 41 (~11.5 to 22.8 kg BW).
2Dried distillers grains with solubles.
3Hamlet Protein, Findlay, OH.
4Quantum Blue 5G (AB Vista, Marlborough, UK) provided a release of 0.13% STTD P with 411 FTU/kg.
5O3 trial feed was added at 0%, 1%, 2%, 3%, and 4% at the expense of corn from the experimental diets (NBO3 Technologies LLC, Manhattan, KS).