Table 1.
Ingredient and nutritional composition of the diets.
| Ingredients (g/kg FM) | CTR/PRO | PRE/SYN |
|---|---|---|
| Maize | 207.4 | 196.3 |
| Wheat | 180.0 | 170.0 |
| Barley 2 row | 170.0 | 160.9 |
| Extruded soybean | 149.1 | 141.1 |
| Sweet whey-powder (cattle) | 100.0 | 94.6 |
| Fish meal | 60.0 | 56.8 |
| Soybean meal 44 | 80.0 | 75.7 |
| Whey-powder 50% fat | 25.0 | 23.6 |
| Mono-calcium phosphate | 6.8 | 6.4 |
| Calcium carbonate (CaCO3) | 3.9 | 3.6 |
| L-Lysine HCL | 4.5 | 5.0 |
| Vit-Min Premix* | 4.0 | 3.7 |
| Sodium chloride (marine salt) | 2.5 | 2.3 |
| DL-Methionine 99 | 2.6 | 3.6 |
| L-Threonine | 2.3 | 2.6 |
| L-Tryptophan | 0.6 | 0.7 |
| L-Valine | 1.5 | 1.9 |
| Prebiotic | 0 | 5 |
| Analyzed composition (g/kg FM) | CTR/PRO | PRE/SYN |
| Dry matter | 920.2 | 916.1 |
| Ashes | 49.6 | 48.2 |
| Crude fat | 64.1 | 61.6 |
| Crude protein | 203.2 | 191.1 |
| Neutral detergent fiber | 92.7 | 91.0 |
| Acid detergent fiber | 32.7 | 32.4 |
| Calculated composition (g/kg FM except ME) | ||
| Metabolizable energy (kcal/kg FM) | 3,378 | 3,213 |
| Crude protein | 214 | 205 |
| Lysine | 15 | 15 |
| Methionine | 6 | 7 |
| Threonine | 10 | 10 |
| Tryptophan | 3 | 3 |
| Valine | 11 | 10 |
| Cysteine | 3 | 3 |
| Leucine | 15 | 15 |
| Isoleucine | 9 | 8 |
*indicates that values of p are <0.05 and statistical difference is present.