Table 2.
Intake of nutrients by mature horses fed alfalfa, rhizoma peanut, and bermudagrass hays1
| Daily intake | Hay | SEM | P-value | ||
|---|---|---|---|---|---|
| Alfalfa | Rhizoma peanut | Bermudagrass | |||
| Dry matter | 11.8 | 11.8 | 12.0 | 0.05 | 0.0939 |
| Organic matter | 10.4 | 10.6 | 10.1 | 0.14 | 0.0718 |
| Digestible energy, Mcal/d | 29.91a | 29.37a | 20.78b | 0.35 | <0.0001 |
| Crude protein | 2.54a | 1.86b | 1.48c | 0.025 | <0.0001 |
| Neutral detergent fiber | 3.86c | 4.68b | 7.18a | 0.090 | <0.0001 |
| Hemicellulose | 0.84c | 1.22b | 3.15a | 0.038 | <0.0001 |
| Acid detergent fiber | 3.00c | 3.47b | 4.07a | 0.050 | <0.0001 |
| Cellulose | 2.32c | 2.62b | 3.53a | 0.042 | <0.0001 |
| Ether extract | 0.28a | 0.28a | 0.20b | 0.010 | 0.0011 |
| Ethanol-soluble carbohydrates | 0.94a | 0.90a | 0.41b | 0.010 | <0.0001 |
| Water-soluble carbohydrates | 1.17a | 1.03b | 0.71c | 0.010 | <0.0001 |
| Starch | 0.15a | 0.15a | 0.08b | 0.003 | <0.0001 |
| Nonstructural carbohydrates | 1.31a | 1.17b | 0.80c | 0.015 | <0.0001 |
| Calcium, g/d | 189a | 155b | 53c | 1.9 | <0.0001 |
| Phosphorus, g/d | 30b | 35a | 31b | 0.4 | <0.0001 |
| Calcium:Phosphorus, ratio | 6.3a | 4.4b | 1.7c | 0.01 | <0.0001 |
1Intake is expressed as kg/d unless otherwise specified.
a–cWithin row, means without a common letter differ based on a Tukey’s test (P ≤ 0.05).