Table 2.
Composition of phases 3 and 4 diets (as-fed basis)†
| Phase 3 | Phase 4 | |||||||
|---|---|---|---|---|---|---|---|---|
| No DDGS | DDGS | No DDGS | DDGS | |||||
| Item | Normal Thr | High Thr | Normal Thr | High Thr | Normal Thr | High Thr | Normal Thr | High Thr |
| Ingredients, % | ||||||||
| Corn | 83.54 | 83.49 | 66.02 | 65.97 | 85.82 | 85.77 | 77.09 | 77.04 |
| Soybean meal | 14.01 | 14.01 | 1.44 | 1.45 | 11.95 | 11.95 | 5.67 | 5.67 |
| Corn DDGS | — | — | 30.00 | 30.00 | — | — | 15.00 | 15.00 |
| Limestone | 0.95 | 0.95 | 1.25 | 1.25 | 0.90 | 0.90 | 1.05 | 1.05 |
| Monocalcium P (21% P) | 0.45 | 0.45 | — | — | 0.25 | 0.25 | — | — |
| Salt | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| l-Lys-HCl | 0.30 | 0.30 | 0.50 | 0.50 | 0.30 | 0.30 | 0.40 | 0.40 |
| dl-Met | 0.03 | 0.03 | — | — | 0.02 | 0.02 | — | — |
| l-Thr | 0.08 | 0.13 | 0.10 | 0.15 | 0.09 | 0.14 | 0.10 | 0.15 |
| l-Trp | 0.02 | 0.02 | 0.06 | 0.06 | 0.02 | 0.02 | 0.04 | 0.04 |
| Mineral–vitamin premix‡ | 0.10 | 0.10 | 0.10 | 0.10 | 0.08 | 0.08 | 0.08 | 0.08 |
| Phytase|| | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 |
| Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Calculated analysis | ||||||||
| SID amino acids, % | ||||||||
| Lys | 0.76 | 0.76 | 0.76 | 0.76 | 0.71 | 0.71 | 0.71 | 0.71 |
| Ile:Lys | 60 | 60 | 55 | 55 | 60 | 60 | 57 | 57 |
| Leu:Lys | 151 | 150 | 186 | 186 | 155 | 155 | 173 | 173 |
| Met:Lys | 31 | 31 | 32 | 32 | 30 | 30 | 31 | 31 |
| Met and Cys:Lys | 58 | 58 | 62 | 62 | 58 | 58 | 60 | 60 |
| Thr:Lys | 63 | 69 | 63 | 69 | 65 | 72 | 65 | 72 |
| Trp:Lys | 19.2 | 19.2 | 19.1 | 19.1 | 19.0 | 19.0 | 19.1 | 19.1 |
| Val:Lys | 70 | 70 | 72 | 72 | 70 | 70 | 71 | 71 |
| SID Lys:NE, g/Mcal | 2.99 | 2.99 | 3.01 | 3.01 | 2.78 | 2.78 | 2.78 | 2.78 |
| NE, kcal/kg | 2,540 | 2,540 | 2,527 | 2,527 | 2,558 | 2,558 | 2,551 | 2,551 |
| CP, % | 13.94 | 13.98 | 15.17 | 15.20 | 13.15 | 13.19 | 13.76 | 13.80 |
| Ca, % | 0.52 | 0.52 | 0.54 | 0.54 | 0.45 | 0.45 | 0.46 | 0.46 |
| P, % | 0.41 | 0.41 | 0.40 | 0.40 | 0.36 | 0.36 | 0.35 | 0.35 |
| STTD P, % | 0.32 | 0.32 | 0.32 | 0.32 | 0.28 | 0.28 | 0.27 | 0.27 |
| NDF, % | 8.76 | 8.76 | 16.18 | 16.18 | 8.80 | 8.79 | 12.51 | 12.51 |
| IDF, %$ | 11.29 | 11.28 | 17.63 | 17.62 | 11.19 | 11.18 | 14.36 | 14.36 |
IDF, insoluble dietary fiber; NDF, neutral detergent fiber; STTD, standard total tract digestibility.
Phases 3 and 4 were fed from 82.5 to 108.2, and 108.2 kg to market, respectively.
Provided per kilogram of diet: 110 mg Zn, 110 mg Fe, 0.30 mg I, 0.30 mg Se, 5,290 IU vitamin A, 1,323 IU vitamin D, 26.5 IU vitamin E, 1.2 mg vitamin K, 22.5 mg niacin, 7.5 mg pantothenic acid, 2.25 mg riboflavin, and 11 µg vitamin B12.
Optiphos 2000 (Huvepharma Inc. Peachtree City, GA) provided 858.7 units of phytase/kg of diet with an assumed release of 0.12% STTD P.
Insoluble digestible fiber. Matrix loading values are derived from Navarro (2018).