Table 4.
Categories | Low RFI(n = 559) |
Middle RFI(n = 559) |
High RFI(n = 559) |
|||
---|---|---|---|---|---|---|
Mean | SD | Mean | SD2 | Mean | SD | |
General traits | ||||||
Average body weight at day 21, kg | 1.25a | 0.21 | 1.26a | 0.21 | 1.27a | 0.13 |
Average body weight at day 42, kg | 3.35A | 0.25 | 3.30B | 0.21 | 3.36A | 0.21 |
Body weight gain, kg | 2.10A | 0.24 | 2.04B | 0.25 | 2.09A | 0.19 |
Daily body weight gain, kg/D | 0.11A | 0.01 | 0.10B | 0.01 | 0.10B | 0.01 |
Feed intake, kg | 4.58C | 0.51 | 5.34B | 0.48 | 6.18A | 0.41 |
Residual feed intake, kg | −0.86C | 0.26 | 0.02B | 0.03 | 0.76A | 0.17 |
Feed conversion ratio | 2.18C | 0.13 | 2.63B | 0.09 | 2.96A | 0.12 |
Feeding behavior traits | ||||||
Total feeding time, min | 198.72B | 52.19 | 225.28A | 48.49 | 231.51A | 39.66 |
Daily feed intake, kg/D | 0.25C | 0.03 | 0.28B | 0.02 | 0.30A | 0.02 |
Meal feed intake, g | 33.93B | 7.24 | 34.00B | 6.39 | 36.63A | 6.35 |
Visit duration, s | 72.32a | 21.74 | 70.59a | 17.31 | 69.54a | 14.87 |
Meal duration, s | 87.68a | 27.13 | 83.32a | 21.84 | 81.69b | 18.29 |
Average interval between meals, min | 195.25A | 43.84 | 170.16B | 30.22 | 170.05B | 28.54 |
Daily feeding rate, g/min | 24.20B | 5.08 | 25.38B | 5.11 | 27.54A | 4.61 |
Number of meals per day | 7.51B | 1.60 | 8.49A | 1.54 | 8.45A | 1.39 |
Number of visits per day | 9.13B | 2.09 | 10.04A | 2.19 | 9.94A | 1.83 |
A,B,a,b,CDifferent letters in the same row mean significant differences between different groups. Capital: P < 0.01; Lowercase: P < 0.05.
RFI, Residual Feed Intake.
SD, standard deviation.