Table 1.
Composition of sheep diets 1.
| Item | CON | OAK | TAN |
|---|---|---|---|
| Components (g/kg DM) | |||
| Meadow hay | 588 | 581 | 586 |
| Barley meal | 294 | 290 | 293 |
| Soybean meal | 98.0 | 96.8 | 97.7 |
| Polfamix 2 | 19.6 | 19.4 | 19.5 |
| Oak bark extract | - | 12.6 | - |
| Tannic acid | - | - | 3.91 |
| Chemical composition (g/kg DM) | |||
| Dry matter | 887 | 887 | 887 |
| Crude protein 3 | 110 | 109 | 109 |
| Crude fat | 21.8 | 21.8 | 21.7 |
| Starch | 222 | 219 | 221 |
| NDF | 442 | 436 | 440 |
| ADF | 371 | 366 | 369 |
| ADL | 35.7 | 35.4 | 35.6 |
| Crude ash | 34.4 | 34.2 | 34.3 |
| Nutrient intake (g/d) | |||
| Dry matter | 905 | 917 | 908 |
| Crude protein | 112 | 112 | 112 |
| Crude fat | 22.2 | 22.5 | 22.2 |
| Starch | 226 | 226 | 226 |
| NDF | 451 | 451 | 451 |
| ADF | 378 | 378 | 378 |
| ADL | 36.4 | 36.5 | 36.4 |
| Crude ash | 35.1 | 35.3 | 35.1 |
CON, control diet; OAK, diet with oak bark extract addition; TAN, diet with tannic acid addition; DM, dry matter; NDF, neutral detergent fiber; ADF, acid detergent fiber; ADL, acid detergent lignin. 1 diet formulated according to the recommendations for ruminants [34]; 2 Polfamix O-K (Trouw Nutrition Polska, Grodzisk Mazowiecki, Poland) in kilograms: g: Ca 240, Na 60, P 120, Mg 65, Zn 2.5, Mn 3.0, vit. E 1.5, Se 0.003, Co 0.015; IU: vit. A 300.000, vit. D3 30.000; 3 expressed as N × 6.25.