Item | Treatment | SEM | P value |
|---|
CON | EHAY | MHAY | LHAY | Trt | Time1 | Trt × Time |
|---|
Overall (d 1 to 196) |
 BW, kg | 92.1 | 88.7 | 89.1 | 92.7 | 1.28 | 0.06 |  < 0.01 |  < 0.01 |
 ADG, kg/d | 0.83 | 0.77 | 0.78 | 0.84 | 0.02 | 0.07 |  < 0.01 | 0.92 |
 Withers height, cm | 89.2 | 87.6 | 87.9 | 88.3 | 0.54 | 0.16 |  < 0.01 | 0.12 |
 Heart girth, cm | 98.9 | 98.5 | 98.5 | 100.0 | 0.49 | 0.14 |  < 0.01 | 0.57 |
Calf period (d 1 to 84) |
 FE | 2.76 | 3.02 | 3.53 | 2.63 | 0.38 | 0.40 |  < 0.01 | 0.49 |
- BW Body weight, ADG Average Daily Gain, SEM Standard error mean, Trt Treatment, FE Feed efficiency, defined as total DMI/ADG
- CON = Calves were fed starter concentrate without forage supplementation from d 1 to 84, HAY = Concentrate starter and forage were fed to calves as a free choice from d 1 to 84; EHAY = Calves began to consume forage at the earliest (from d 4 to 6), MHAY = Calves began to consume the forage from d 7 to 9, LHAY = Calves began to consume forage at the latest (from d 10 to 15) time possible
- 1For all variables, data were summarized every two weeks before d 84, data were also collected at the end of the experiment at d 196 for BW and structural growth
