Table 2.
Effects of different forms of hydrolyzable tannin on nutrient intake and apparent digestibility of heifers (n = 8) fed an alfalfa silage-based high forage diet
| Treatment1 | ||||||
|---|---|---|---|---|---|---|
| Item2 | Control | GA | TA | CN | SEM | P |
| Intake | ||||||
| DM, kg/d | 10.55 | 10.58 | 11.19 | 10.82 | 1.076 | 0.23 |
| OM, kg/d | 8.95 | 8.98 | 9.54 | 9.18 | 0.878 | 0.22 |
| CP, kg/d | 2.09 | 2.10 | 2.20 | 2.12 | 0.219 | 0.55 |
| NDF, kg/d | 4.46 | 4.44 | 4.73 | 4.48 | 0.430 | 0.63 |
| ADF, kg/d | 3.50 | 3.44 | 3.62 | 3.55 | 0.378 | 0.63 |
| GE, Mcal/d | 54.98 | 55.67 | 58.83 | 57.39 | 5.646 | 0.23 |
| Digestibility, % | ||||||
| DM | 61.6 | 60.1 | 58.9 | 60.0 | 0.86 | 0.20 |
| OM | 65.2 | 64.7 | 62.7 | 63.5 | 0.92 | 0.13 |
| CP | 69.6a | 68.3a | 62.2b | 64.0b | 0.87 | <0.001 |
| NDF | 48.3 | 45.8 | 44.2 | 44.3 | 1.48 | 0.20 |
| ADF | 40.3 | 38.1 | 37.5 | 40.1 | 3.20 | 0.77 |
| GE | 60.6 | 60.2 | 57.1 | 60.4 | 1.46 | 0.24 |
a–bWithin a row, means without a common superscript letter differ at P < 0.05.
1GA = gallic acid; TA = tannic acid; CN = chestnut.
2Nutrient intakes and apparent total-tract digestibility at 95% ad libitum intake.