Table 1. Components (% of dry matter—DM-) and estimated chemical composition (% of DM) of the diet administered to the groups of dairy sheep involved in the trial.
| Diets/Groups | |||||
|---|---|---|---|---|---|
| Item | A | B | C | D | E |
| Diet components (%DM) | |||||
| Alfa alfa haya | 35.36 | 35.3 | 35.31 | 35.24 | 35.17 |
| Wheat strawb | 19,00 | 18.96 | 18.97 | 18.93 | 18.89 |
| Concentrate mixc | 45.63 | 45.54 | 45.55 | 45.46 | 45.37 |
| Rumen protected methionine commercial product | - | 0.2 | - | 0.2 | 0.4 |
| Rumen protected lysine commercial product | - | - | 0.17 | 0.17 | 0.17 |
| Diet chemical composition (%DM)d | |||||
| DM | 90.39 | 90.4 | 90.40 | 90.41 | 90.41 |
| Ash | 6.85 | 6.91 | 6.86 | 6.92 | 6.99 |
| aNDFom | 38.01 | 37.93 | 37.94 | 37.86 | 37.86 |
| ADF | 26.29 | 26.24 | 26.24 | 26.20 | 26.14 |
| ADL | 5.61 | 5.60 | 5.60 | 5.59 | 5.59 |
| NFC | 39.69 | 39.64 | 39.63 | 39.57 | 39.57 |
| Starch | 23.03 | 23.01 | 23.00 | 22.98 | 22.98 |
| Sugars | 3.22 | 3.22 | 3.22 | 3.21 | 3.21 |
| EE | 1.67 | 1.66 | 1.75 | 1.75 | 1.74 |
| CP | 13.92 | 13.99 | 13.97 | 14.03 | 14.03 |
| Sol CP | 3.69 | 3.78 | 3.69 | 3.78 | 3.78 |
| RDP3x | 8.92 | 8.90 | 8.94 | 8.92 | 8.92 |
| Met %, (g/d) | 0.23 (6.5) | 0.35 (7.8) | 0.23 (6.5) | 0.35 (7.8) | 0.35 (9.2) |
| Met, % MP | 2.18 | 2.60 | 2.17 | 2.59 | 3.04 |
| Lys %, (g/d) | 0.60 (20.3) | 0.60 (20.3) | 0.72 (21.3) | 0.72 (21.3) | 0.72 (21.3) |
| Lys, % MP | 6.81 | 6.77 | 7.12 | 7.08 | 7.05 |
| Lys:Met | 3.13:1 | 2.60:1 | 3.28:1 | 2.72:1 | 2.33:1 |
| ENl (Mcal/kg) | 1.53 | 1.53 | 1.53 | 1.53 | 1.53 |
a 93.0%DM, 7.1% Ash, 14.6%CP, 10.0%EE, 51% NDF
b 91.6%DM, 6.8% Ash, 16.0%CP, 8.0%EE, 72.9% NDF
c 87.7%DM, 6.8% Ash, 15.30%CP, 2.8%EE, % NDF
d Estimated using the software NDS Professional Ver. 3.9.7.11, Rumen Sas, Reggio Emilia, Italy.
aNDFom: Ash-free NDF treated with amylase; ADF: Acid Detergent Fiber; ADL: lignin; NFC: Non Fibrous Carbohydrate; EE: Ether Extract; CP: Crude Protein; Sol CP: Soluble Crude Protein; RDP3x: Rumen Degradable Protein at 3 times the maintenance intake; Met %, (g/d): methionine level, expressed both as % DM or daily amount; Met, % MP: methionine expressed as % of metabolizable protein; Lys %, (g/d): lysine level, expressed both as % DM or daily amount; Lys, % MP: lysine expressed as % of metabolizable protein; ENl (Mcal/kg): Net Energy of lactation, expressed as Mcal/kg.