Table 1.
Ingredient and nutrient composition of experimental diets1 (as-fed basis)
| LP | HP | |||
|---|---|---|---|---|
| Ingredients, % | AA– | AA+ | AA– | AA+ |
| Corn | 54.53 | 54.18 | 36.41 | 35.91 |
| Wheat | 13.00 | 13.00 | 13.00 | 13.00 |
| Barley | 17.50 | 17.50 | 17.50 | 17.50 |
| Soybean meal, 46% CP | 7.50 | 7.50 | 26.50 | 26.50 |
| Canola oil | — | — | 3.00 | 3.00 |
| l-Lys HCl2 | 1.13 | 1.13 | 0.55 | 0.55 |
| dl-Met2 | 0.33 | 0.48 | 0.17 | 0.31 |
| l-Trp2 | 0.10 | 0.15 | — | 0.05 |
| l-Thr2 | 0.42 | 0.57 | — | 0.31 |
| l-Arg2 | 0.55 | 0.55 | — | — |
| l-Leu2 | 0.43 | 0.43 | — | — |
| l-Iso2 | 0.32 | 0.32 | — | — |
| l-Val2 | 0.33 | 0.33 | 0.02 | 0.02 |
| l-His2 | 0.18 | 0.18 | — | — |
| l-Phe2 | 0.57 | 0.57 | - | - |
| Salt | 0.35 | 0.35 | 0.35 | 0.35 |
| Vitamin/mineral premix3 | 0.20 | 0.20 | 0.20 | 0.20 |
| Limestone | 1.38 | 1.38 | 1.32 | 1.32 |
| Monocalcium phosphate | 1.18 | 1.18 | 0.98 | 0.98 |
| Calculated nutrient content 4 | ||||
| DM, % | 87.07 | 87.12 | 84.52 | 84.57 |
| CP, % | 16.36 | 16.57 | 20.26 | 20.48 |
| ME, kcal/kg | 3259 | 3264 | 3343 | 3347 |
| NE, kcal/kg | 2510 | 2514 | 2507 | 2510 |
| SID Lys:CP, %:% | 0.08 | 0.08 | 0.06 | 0.06 |
| AA, % SID | ||||
| Arg | 1.16 | 1.16 | 1.16 | 1.16 |
| His | 0.45 | 0.45 | 0.45 | 0.45 |
| Ile | 0.72 | 0.72 | 0.72 | 0.72 |
| Leu | 1.40 | 1.40 | 1.40 | 1.40 |
| Lys | 1.28 | 1.28 | 1.28 | 1.28 |
| Met+Cys | 0.70 | 0.85 | 0.70 | 0.85 |
| Phe+Tyr | 0.86 | 0.86 | 1.08 | 1.08 |
| Thr | 0.76 | 0.91 | 0.76 | 0.91 |
| Trp | 0.20 | 0.25 | 0.20 | 0.25 |
| Val | 0.81 | 0.81 | 0.81 | 0.81 |
1LP, low protein; HP, high protein; AA–, basal AA profile; AA+, functional AA profile (Thr, Met, and Trp at 120% of requirements for growth); SID, standardized ileal digestible.
2l-Lys HCl, Archer Daniels Midland Company (Decatur, IL); dl-Met, Evonik Operations GmbH (Hanau-Wolfgang, Germany); l-Trp, l-Thr, and l-Val, Jefo Nutrition Inc. (Saint-Hyacinthe, QC, Canada); all other AA, ACP Chemicals, Inc. (St. Leonard, QC, Canada).
3Supplied per kilogram of complete diet: vitamin A, 6,000 IU; vitamin D, 9.3 mg; vitamin E, 35 IU; menadione, 2.5 mg; vitamin B12, 0.02 mg; thiamine, 1.00 mg; biotin, 0.10 mg; niacin, 20 mg; riboflavin, 4 mg; pantothenate, 12 mg; folic acid, 0.50 mg; pyridoxine, 5.0 mg; Fe,75 mg; Zn, 75 mg; Mg, 20 mg; Cu, 10 mg; Se, 0.15 mg, and I, 0.50 mg.
4Nutrient content of diets based on estimated nutrient contents of ingredients according to NRC (2012) and analyzed AA content according to Evonik Operations GmbH.