Table 4.
Analyzed chemical composition (g/kg DM or as stated) of the diets in experiment 2
| Items† | Concentrate mix | Timothy | |
|---|---|---|---|
| High energy (HEC) | Low energy (LEC) | ||
| DM, g/kg as fed | 904 | 890 | 896 |
| OM | 911 | 913 | 927 |
| CP | 201 | 191 | 97 |
| SOLP | 72 | 68 | 39 |
| NDICP | 15 | 32 | 15 |
| ADICP | 7 | 15 | 10 |
| aNDF | 232 | 346 | 636 |
| ADF | 102 | 187 | 402 |
| ADL | 32 | 31 | 53 |
| Ether extract | 20 | 12 | 19 |
| Ash | 89 | 87 | 73 |
| Ca | 11 | 17 | 3 |
| P | 8 | 7 | 2 |
| K | 11 | 11 | 23 |
| Na | 3 | 2 | 0 |
| Cl | 5 | 6 | 13 |
| S | 4 | 4 | 2 |
| Mg | 4 | 3 | 2 |
| TDN | 708 | 665 | 564 |
| ME, MJ/kg DM | 11.3 | 10.5 | 8.6 |
| NEm, MJ/kg DM | 7.5 | 6.7 | 5.1 |
| NEg, MJ/kg DM | 4.8 | 4.2 | 2.7 |
| Total carbohydrates | 689 | 710 | 811 |
| NFC | 472 | 396 | 189 |
| Carbohydrate fraction, g/kg carbohydrate | |||
| CA | 55 | 56 | 74 |
| CB1 | 397 | 235 | 5 |
| CB2 | 232 | 266 | 154 |
| CB3 | 203 | 338 | 608 |
| CC | 113 | 104 | 158 |
| Protein fraction, g/kg CP | |||
| PA+B1 | 358 | 356 | 402 |
| PB2 | 570 | 474 | 447 |
| PB3 | 36 | 90 | 42 |
| PC | 36 | 80 | 108 |
DM, dry matter; OM, organic matter; CP, crude protein; SOLP, soluble CP; NDICP, neutral detergent-insoluble CP; ADICP, acid detergent-insoluble CP; aNDF, neutral detergent fiber analyzed using a heat-stable amylase and expressed inclusive of residual ash; ADF, acid detergent fiber; ADL, acid detergent lignin; TDN, total digestible nutrients; NEm, net energy for maintenance; NEg, net energy for growth; NFC, non-fiber carbohydrate; CA, carbohydrate A fraction, ethanol-soluble carbohydrates; CB1, carbohydrate B1 fraction, starch; CB2, carbohydrate B2 fraction, soluble fiber; CB3, carbohydrate B3 fraction, available insoluble fiber; CC, carbohydrate C fraction, unavailable carbohydrate; PA+B1, protein A and B1 fractions, soluble CP; PB2, protein B2 fraction, intermediate degradable CP; PB3, protein B3 fraction, slowly degradable fiber-bound CP; PC, protein C fraction, unavailable CP.