Table 2.
Composition of experimental diets in grower phase, as fed basis.1
| Item | Control | Flaxseed inclusion, %2 |
Yeast bioactives inclusion, %3 |
||||
|---|---|---|---|---|---|---|---|
| 1 | 3 | 5 | 0.025 | 0.05 | 0.10 | ||
| Corn | 42.8 | 42.5 | 41.8 | 41.1 | 42.8 | 42.8 | 42.7 |
| Soybean meal | 21.3 | 20.8 | 19.9 | 19.9 | 21.3 | 21.3 | 21.3 |
| Wheat | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 |
| Barley | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 |
| Corn germ meal, 60% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 |
| Wheat middlings | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 |
| Soy oil | 1.88 | 1.68 | 1.28 | 0.88 | 1.88 | 1.88 | 1.88 |
| Monocalcium phosphate | 2.03 | 2.03 | 2.02 | 2.02 | 2.03 | 2.03 | 2.03 |
| Limestone fine | 0.84 | 0.85 | 0.85 | 0.86 | 0.84 | 0.84 | 0.84 |
| Vitamins and trace minerals premix4 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| Salt | 0.29 | 0.29 | 0.29 | 0.29 | 0.29 | 0.29 | 0.29 |
| Sodium bicarbonate | 0.16 | 0.17 | 0.17 | 0.17 | 0.16 | 0.16 | 0.16 |
| L-Lysine HCl | 0.14 | 0.14 | 0.15 | 0.15 | 0.14 | 0.14 | 0.14 |
| DL-Methionine, 99% | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 | 0.04 |
| L-Threonine, 98% | 0.03 | 0.03 | 0.03 | 0.04 | 0.03 | 0.03 | 0.03 |
| Flaxseed | - | 1.00 | 3.00 | 5.00 | - | - | - |
| Yeast bioactives | - | - | - | - | 0.025 | 0.05 | 0.10 |
| Calculated provisions | |||||||
| AME, kcal/kg | 2,800 | 2,800 | 2,800 | 2,800 | 2,800 | 2,800 | 2,800 |
| Crude protein, % | 18.5 | 18.5 | 18.5 | 18.5 | 18.5 | 18.5 | 18.5 |
| SID Lys, % | 0.82 | 0.82 | 0.82 | 0.82 | 0.82 | 0.82 | 0.82 |
| SID Met + Cys, % | 0.60 | 0.60 | 0.60 | 0.60 | 0.60 | 0.60 | 0.60 |
| SID Thr, % | 0.57 | 0.57 | 0.57 | 0.57 | 0.57 | 0.57 | 0.57 |
| Calcium, % | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Available phosphorus, % | 0.45 | 0.45 | 0.45 | 0.45 | 0.45 | 0.45 | 0.45 |
| Chloride, % | 0.23 | 0.23 | 0.23 | 0.23 | 0.23 | 0.23 | 0.23 |
| Sodium, % | 0.17 | 0.17 | 0.17 | 0.17 | 0.17 | 0.17 | 0.17 |
| Analyzed provisions | |||||||
| Dry matter, % | 87.8 | 87.8 | 88.1 | 88.3 | 87.9 | 87.7 | 87.9 |
| Crude protein, % | 19.7 | 19.6 | 19.2 | 18.6 | 20.4 | 19.5 | 19.5 |
| Gross energy, kcal/kg | 4,011 | 3,923 | 4,045 | 4,025 | 3,996 | 4,036 | 4,000 |
| Crude fat, % | 3.00 | 3.59 | 3.88 | 3.81 | 2.19 | 3.21 | 3.39 |
| Calcium, % | 0.77 | 0.81 | 0.84 | 0.82 | 0.80 | 0.78 | 0.75 |
| Phosphorus, % | 0.62 | 0.68 | 0.64 | 0.62 | 0.61 | 0.65 | 0.62 |
| Fatty acids, % of total fat | |||||||
| C18:3 | 5.66 | 7.88 | 11.8 | 15.9 | - | - | - |
| C20:5 | 0.16 | 0.14 | 0.13 | 0.12 | - | - | - |
| C22:6 | 0.01 | 0.02 | 0.02 | 0.02 | - | - | - |
| ∑ n-3 | 5.66 | 7.88 | 11.8 | 15.9 | - | - | - |
| ∑ n-6 | 55.4 | 54.3 | 50.7 | 47.3 | - | - | - |
| ∑ n-6: ∑ n-3 ratio | 9.79 | 6.89 | 4.28 | 2.97 | - | - | - |
Grower: 4 to 8 wk of age (woa).
Co-extruded full-fat flaxseed and pulse mixture (1:1 wt/wt), as a source of a-linolenic acid, O & T Farms Ltd.
Enzymatically bio-processed yeast cell walls from Saccharomyces cerevisiae, as a source of yeast bioactives (CBS Bio Platforms Inc.).
Provided in kg of diet: vitamin A (retinol), 10,000 IU; vitamin D3 (cholecalciferol), 3,000 IU; vitamin E, 100 mg; vitamin K3 (menadione), 5.0 mg; vitamin B1 (thiamin), 4.0 mg; vitamin B2 (riboflavin), 10.0 mg; vitamin B3 (niacin), 50.0 mg; vitamin B5 (pantothenic acid), 20.0 mg; vitamin B6 (pyridoxine), 4.0 mg; vitamin B9 (folic acid), 2.0 mg; vitamin B12 (cyanocobalamin), 30.0 mg; biotin, 200 mcg; choline, 400.0 mg; Mg, 110 mg; Zn, 80 mg; Fe, 40.0 mg; Cu, 10.0 mg; I, 1 mg, Se, 0.31 mg.