Table 1.
Descriptive statistics of measured traits for Pekin ducks
| Items | All (n = 358) | ||||
|---|---|---|---|---|---|
| Mean | S.D. | Min | Max | ||
| General traits | BW 19, kg | 1.1 | 0.09 | 0.74 | 1.4 |
| BW 42, kg | 3.8 | 0.2 | 3.1 | 4.4 | |
| BWG, kg | 2.7 | 0.2 | 1.8 | 3.3 | |
| Feed Intake, kg | 7.2 | 0.8 | 3.9 | 9.4 | |
| RFI, kg | 0.0 | 0.6 | −3.9 | 2.1 | |
| FCR | 2.7 | 0.3 | 1.3 | 3.4 | |
| Feeding behavior traits | Total Feed Time, min | 320.6 | 72.9 | 204.9 | 616.6 |
| Daily feed intake, kg/d | 0.324 | 0.037 | 0.234 | 0.669 | |
| Meal Feed Intake, g | 33.8 | 22.8 | 1.0 | 350.0 | |
| Visit duration, s | 76.6 | 20.0 | 31.0 | 149.3 | |
| Meal duration, s | 159.2 | 162.4 | 79.9 | 316.8 | |
| Average interval between meals, min | 161.8 | 123 | 91.0 | 309.5 | |
| Daily Feeding Rate, g/min | 20.3 | 3.7 | 14.0 | 34.1 | |
| Number of meals per day | 8.6 | 1.4 | 2 | 14.4 | |
| Number of visits per day | 13.6 | 3.1 | 8.9 | 28.8 | |
BW 19: average body eight at d 19; BW 42: average body eight at d 42; RFI, residual feed intake; FCR, feed conversion ratio. S.D., standard deviation