Table 1.
Ingredient and nutrient composition of dietary components and experimental diets a(on an air dry basis, g/kg unless otherwise stated).
| Dietary components | Experimental diets | ||||
|---|---|---|---|---|---|
| CER | CER + ENZ | BAL | Basal | Basal + ENZ | |
| Ingredient compositionb | |||||
| Barley | 450.60 | 450.48 | 0.00 | 377.30 | 377.19 |
| Wheat | 418.00 | 418.00 | 0.00 | 350.00 | 349.99 |
| Soybean meal | 0.00 | 0.00 | 829.60 | 135.00 | 134.97 |
| Wheat feed | 131.40 | 131.40 | 0.00 | 110.00 | 110.02 |
| Limestone | 0.00 | 0.00 | 76.80 | 12.50 | 12.50 |
| Lysine HCl | 0.00 | 0.00 | 26.90 | 4.40 | 4.37 |
| Mono dicalcium phosphate | 0.00 | 0.00 | 22.60 | 3.70 | 3.68 |
| Salt | 0.00 | 0.00 | 18.40 | 3.00 | 3.00 |
| L-Threonine | 0.00 | 0.00 | 6.70 | 1.10 | 1.09 |
| Soya oil | 0.00 | 0.00 | 6.10 | 1.00 | 1.00 |
| Vitamin and mineral premixc | 0.00 | 0.00 | 6.10 | 1.00 | 1.00 |
| DL-Methionine | 0.00 | 0.00 | 4.90 | 0.80 | 0.80 |
| Celite | 0.00 | 0.00 | 1.80 | 0.30 | 0.30 |
| Enzymed | 0.00 | 0.12 | 0.00 | 0.00 | 0.10 |
| Component compositionb | |||||
| Cereal fraction | 1000.00 | 1000.00 | 0.00 | 837.30 | 837.30 |
| Balancer fraction | 0.00 | 0.00 | 1000.00 | 162.70 | 162.70 |
| Nutrient compositione | |||||
| Dry matter | 878.0 | 879.0 | 903.0 | 882.1 | 882.9 |
| Crude protein | 103.0 | 106.0 | 409.0 | 153.2 | 153.2 |
| Ash | 22.0 | 22.0 | 173.6 | 46.6 | 46.6 |
| Oil | 27.0 | 26.5 | 26.3 | 26.8 | 26.5 |
| Crude fibre | 47.0 | 46.0 | 25.0 | 42.5 | 42.5 |
| Neutral detergent fibre | 157.0 | 152.0 | 70.0 | 142.8 | 138.7 |
| Acid detergent fibre | 57.9 | 57.4 | 36.7 | 54.5 | 54.0 |
| Net energy, MJ/kg | — | — | — | 9.40 | 9.40 |
| Total lysine | 3.4 | 3.4 | 41.0 | 9.52 | 9.52 |
| SIDf lysine, | — | — | — | 9.15 | 9.15 |
| Total Ca, | — | — | — | 6.48 | 6.48 |
| Digestible P | — | — | — | 2.40 | 2.40 |
| Arabinoxylans | — | — | — | 86.88 | 86.88 |
| β-glucans | — | — | — | 22.82 | 22.82 |
| Xylanase activityg, VU/kg | 0 | 5748 | — | 0 | 4770 |
| β-glucanase activityg, VU/kg | 0 | 6439 | — | 0 | 5344 |
aCER = cereal fraction of the diet, CER + ENZ = cereal fraction of the diet supplemented with a carbohydrase enzyme (xylanase and β-glucanase, XB), BAL = balancer fraction (non-cereal component) of the diet.
bCalculated values.
cVitamin and mineral premix provided per kilogram of complete diet (on an air basis): Cu from copper sulphate, 15 mg; Fe from ferrous sulphate monohydrate, 24 mg; Mn from manganese oxide, 31 mg; Zn from zinc oxide, 80 mg; I from potassium iodate, 0.3 mg; Se from sodium selenite, 0.2 mg; retinyl acetate 0.7 mg; cholecalciferol, 12.5 μg; DL-alpha-tocopheryl acetate, 40 mg; Vitamin K, 4 mg; vitamin B12, 15 μg; riboflavin, 2 mg; nicotinic acid, 12 mg; pantothenic acid, 10 mg; vitamin B1, 2 mg; vitamin B6, 3 mg; and celite, 300 mg.
dCarbohydrase complex based on xylanase and β-glucanase (Rovabio® Excel AP, Adisseo France SAS, Antony, France) providing a minimum guaranteed content of 2200 VU and 3000 VU, respectively, per kg of finished diet (on an air dry basis).
eAnalysed values for dietary components (CER, CER + ENZ and BAL). For the experimental diets (basal and basal + ENZ) values given are calculated from the analysed dietary component values. Values with a “-” were not analysed and the calculated values given for the experimental diets are from the calculated values in the matrix formulation.
fSID = Standardized ileal digestibility.
gOne viscosity unit (VU) is defined as the amount of enzyme reducing the viscosity of the solution, to give a change in relative fluidity of 1 dimensionless unit per minute per g at pH 5.5 and 30 °C.