Table 3.
Empty body component mass and rate of gain means (±SE) across feeding period 1 and feeding period 2 for lambs that were allocated to high or low feeding level treatments in feeding period 1
| Treatment1 | FFEBW2 (kg) |
FFEBW2 gain (g/d) | Fat (kg) |
Fat gain (g/d) |
Lean (kg) |
Lean gain (g/d) |
Bone (kg) |
Bone gain (g/d) |
|---|---|---|---|---|---|---|---|---|
| Feeding period 1 | ||||||||
| Start | 25.9 ± 0.3 | — | 4.5 ± 0.1 | — | 18.0 ± 0.2 | — | 3.4 ± 0.04 | — |
| Finish | ||||||||
| Low | 29.9 ± 0.5a | 72.8 ± 8.2a | 6.4 ± 0.2a | 34.5 ± 3.3a | 19.7 ± 0.3a | 28.6 ± 5.1a | 3.8 ± 0.1a | 9.1 ± 0.9a |
| High | 37.0 ± 0.4b | 197.7 ± 7.8b | 9.6 ± 0.2b | 90.5 ± 3.1b | 23.2 ± 0.3b | 92.2 ± 4.9b | 4.1 ± 0.1b | 13.8 ± 0.9b |
| Feeding period 2 | ||||||||
| Start | ||||||||
| Low | 31.2 ± 0.3a | 19.4 ± 5.1a | 5.9 ± 0.2a | −13.8 ± 2.2a | 21.9 ± 0.2a | 31.1 ± 3.2a | 4.0 ± 0.1a | 1.3 ± 0.4 |
| High | 33.5 ± 0.3b | −46.5 ± 5.0b | 6.3 ± 0.2b | −40.1 ± 2.2b | 22.7 ± 0.2b | −6.1 ± 3.1b | 4.2 ± 0.1b | |
| Finish | ||||||||
| Low | 39.6 ± 0.4a | 125.1 ± 4.0 | 11.1 ± 0.3a | 84.2 ± 2.1 | 24.1 ± 0.2a | 33.9 ± 2.5 | 4.4 ± 0.1a | 6.3 ± 0.5 |
| High | 41.6 ± 0.4b | 12.1 ± 0.3b | 24.9 ± 0.2b | 4.6 ± 0.1b | ||||
Different superscripts at each timepoint indicate treatment means differed significantly (P < 0.05).
1Low, low level of feeding (dry matter intake 2.5% of liveweight); High, high level of feeding (dry matter intake 3.6% of liveweight).
2Fleece free empty body weight.