Table 6.
Diet composition, exp. 5, (as-fed basis)1
| Feed-grade AA levels in high-lysine sorghum diets | ||||||
|---|---|---|---|---|---|---|
| Item | Corn | Sorghum | Low | Low-Med | Med-High | High |
| Ingredient, % | ||||||
| Corn | 59.55 | — | — | — | — | — |
| Conventional sorghum | — | 59.10 | — | — | — | — |
| High-lysine sorghum | — | — | 59.15 | 62.30 | 66.75 | 73.55 |
| Soybean meal, 46.5% CP | 34.70 | 34.65 | 34.65 | 31.70 | 27.50 | 21.05 |
| Choice white grease | 2.25 | 2.70 | 2.73 | 2.35 | 1.85 | 1.00 |
| Calcium carbonate | 0.95 | 0.96 | 0.96 | 0.96 | 0.94 | 0.93 |
| Monocalcium phosphate, 21% | 0.98 | 0.95 | 0.95 | 0.95 | 1.00 | 1.08 |
| Salt | 0.60 | 0.60 | 0.60 | 0.60 | 0.60 | 0.60 |
| l-Lysine HCl | 0.30 | 0.35 | 0.36 | 0.45 | 0.58 | 0.78 |
| dl-Methionine | 0.13 | 0.16 | 0.12 | 0.15 | 0.18 | 0.24 |
| l-Threonine | 0.12 | 0.13 | 0.08 | 0.12 | 0.17 | 0.25 |
| l-Tryptophan | 0.02 | 0.001 | — | — | 0.02 | 0.06 |
| l-Valine | 0.02 | — | — | — | — | 0.08 |
| Trace mineral2 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 |
| Vitamin premix3 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Phytase4 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 |
| Total | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
| Calculated analysis | ||||||
| SID AA, % | ||||||
| Lysine | 1.30 | 1.30 | 1.30 | 1.30 | 1.30 | 1.30 |
| Isoleucine:lysine | 64 | 66 | 74 | 71 | 66 | 59 |
| Leucine:lysine | 128 | 131 | 164 | 161 | 157 | 150 |
| Methionine:lysine | 33 | 34 | 32 | 33 | 34 | 36 |
| Methionine and cysteine:lysine | 56 | 56 | 56 | 56 | 56 | 56 |
| Threonine:lysine | 63 | 63 | 63 | 63 | 63 | 63 |
| Tryptophan:lysine | 19.1 | 19.2 | 20.1 | 19.0 | 19.0 | 19.1 |
| Valine:lysine | 70 | 69 | 77 | 74 | 70 | 70 |
| SID lysine:net energy, g/Mcal | 5.23 | 5.23 | 5.23 | 5.23 | 5.23 | 5.23 |
| SID lysine:crude protein, g/kg | 5.9 | 5.8 | 5.8 | 6.0 | 6.4 | 7.2 |
| Total lysine, % | 1.47 | 1.46 | 1.46 | 1.45 | 1.44 | 1.43 |
| Net energy, kcal/kg | 2,485 | 2,485 | 2,485 | 2,485 | 2,485 | 2,485 |
| Crude protein, % | 21.9 | 22.3 | 22.5 | 21.6 | 20.2 | 18.1 |
| Calcium, % | 0.73 | 0.73 | 0.73 | 0.72 | 0.71 | 0.70 |
| Phosphorus, % | 0.61 | 0.61 | 0.61 | 0.60 | 0.59 | 0.58 |
| Available phosphorus, % | 0.38 | 0.38 | 0.38 | 0.38 | 0.39 | 0.40 |
1Diets were fed from 9.7 to 20.9 kg BW, respectively.
2Provided per kilogram of premix: 22 g Mn from manganese oxide; 73 g Fe from iron sulfate; 73 g Zn from zinc sulfate; 11 g Cu from copper sulfate; 198 mg I from calcium iodate; and 198 mg Se from sodium selenite.
3Provided per kilogram of premix:3,527,360 IU vitamin A; 881,840 IU vitamin D3; 17,637 IU vitamin E; 3,307 mg riboflavin; 1,764 mg menadione; 11,023 mg pantothenic acid; 33,069 mg niacin; and 15.4 mg vitamin D12.
4HiPhos 2700 (DSM Nutritional Products, Parsippany, NJ) provided an estimated release of 0.10% STTD P.