Table 2.
Composition of corn- and wheat-based basal diets, and their calculated and determined analysis (as-fed basis), fed to laying hens (weeks 50–62).
| Item, (g/kg, unless stated otherwise) | Basal diet |
Analyzed nutritive value5, g/kg | Basal diet |
||
|---|---|---|---|---|---|
| Corn | Wheat | Corn | Wheat | ||
| Corn | 575.4 | - | Crude protein | 178.8 | 179.1 |
| Wheat | - | 643.3 | Ether extract | 45.8 | 50.7 |
| Soybean meal | 287.1 | 202.3 | Crude fiber | 29.3 | 31.0 |
| Soybean oil | 14.2 | 29.0 | Total ash | 113.6 | 118.3 |
| Dicalcium phosphate | 12.9 | 13.2 | Total phosphorous | 5.8 | 5.7 |
| Oyster shell | 95.5 | 95.5 | Calcium | 38.2 | 38.9 |
| Salt (NaCl) | 1.7 | 1.3 | Starch | 387.8 | 380.1 |
| Sodium bicarbonate | 1.2 | 2.0 | d-Xylose | 15.6 | 26.4 |
| Vitamin and mineral premix1 | 5.0 | 5.0 | Arabinoxylan6 | 25.2 | 42.5 |
| DL-Methionine | 1.3 | 1.3 | Neutral detergent fiber | 97.2 | 121.4 |
| L-Lysine HCl | 0.3 | 1.4 | Acid detergent fiber | 40.8 | 42.6 |
| L-Threonine | 0.4 | 0.7 | Total lysine | 8.7 | 8.5 |
| Kaolin2 | 5.0 | 5.0 | Total methionine | 3.8 | 3.6 |
| Calculated nutritive value | Total cysteine | 3.1 | 3.2 | ||
| AMEn, MJ/kg | 11.3 | 11.3 | TSAA | 6.9 | 6.8 |
| Crude protein | 17.6 | 17.6 | Total threonine | 6.5 | 6.3 |
| Calcium | 40.0 | 40.0 | Total valine | 8.0 | 7.7 |
| Nonphytate phosphorous | 3.4 | 3.4 | Total tryptophan | 1.9 | 2.1 |
| Digestible TSAA3 | 6.3 | 6.3 | Total arginine | 10.6 | 10.2 |
| Digestible lysine | 7.5 | 7.5 | |||
| Digestible threonine | 5.6 | 5.6 | |||
| Sodium | 1.6 | 1.6 | |||
| DEB4, mEq/kg | 250 | 250 | |||
Supplied per kg of diet: all-trans-retinyl acetate, 8,800 IU; cholecalciferol, 2,500 IU; α-tocopherol acetate, 6.6 mg; menadione sodium bisulfite, 2.5 mg; thiamine mononitrate, 1.5 mg; riboflavin, 4.4 mg; nicotinic acid, 20 mg; calcium D-pantothenate, 8 mg; pyridoxine, 2.5 mg; folic acid, 1.1 mg; cyanocobalamine, 0.08 mg; biotin, 0.15 mg; choline chloride, 400 mg, Mn (from manganese sulfate), 60 mg; Fe (from ferrous sulfate), 30 mg; Zn (from zinc sulfate), 66 mg; Cu (from copper sulfate), 6 mg; I (from potassium iodate), 0.8 mg; Se (from sodium selenite), 0.2 mg.
Dietary supplements (multi-carbohydrase and butyric acid) were added to aliquots of the basal diet at the expense of an inert filler (kaolin).
Total sulfur amino acids.
DEB (dietary electrolyte balance) = (Na+, mEq/kg + K+, mEq/kg) – CL−, mEq/kg.
Mean of 3 samples per diet.
Calculated as d-xylose (g/kg) × 100/62.