| Day | Treatment | LSmeans | SEM | P-value |
---|---|---|---|---|---|
BW, kg | 0 | Control | 5.59 | 0.225 | 0.705 |
 |  | FS1 | 5.97 | 0.178 |  |
 | 15 | Control | 8.84 | 0.761 | 0.111 |
 |  | FS | 10.4 | 0.603 |  |
 | 30 | Control | 14.5 | 1.19 | 0.467 |
 |  | FS | 15.6 | 0.753 |  |
 | 45 | Control | 17.9 | 2.12 | 0.318 |
 |  | FS | 20.7 | 1.84 |  |
ADG, kg/d | 0–15 | Control | 0.199x | 0.043 | 0.079 |
 |  | FS1 | 0.297y | 0.034 |  |
 | 0–30 | Control | 0.288 | 0.032 | 0.402 |
 |  | FS | 0.320 | 0.020 |  |
 | 0–45 | Control | 0.305 | 0.035 | 0.605 |
 |  | FS | 0.330 | 0.031 |  |
 | 30–45 | Control | 0.358 | 0.045 | 0.409 |
 |  | FS | 0.408 | 0.039 |  |