Table 4.
Behavioural activity in pigs from the low residual feed intake (LRFI) and high residual feed intake (HRFI) lines, on pigs from generation G6
| Line | ||||
|---|---|---|---|---|
| Traits 1 | LRFI | HRFI | RMSE | P 2 |
| Behavioural activity (% on 24 h) 3 | ||||
| Standing | 9.6 | 12.1 | 0.2 | *** |
| Feeding | 4.3 | 5.4 | 0.1 | *** |
| Social investigation | 3.2 | 3.5 | 0.1 | 0.08 |
| Pen investigation | 3.5 | 3.9 | 0.1 | 0.07 |
| Feeding patterns 4 | ||||
| Feed intake (g/day) | 1959 | 2123 | 272 | *** |
| Number of visits/day | 13 | 19 | 5 | *** |
| Feed intake/visit (g) | 190 | 159 | 52 | *** |
| Visit duration (s) | 299 | 270 | 79 | Ns |
| Feeding rate (g/min) | 38 | 35 | 1 | *** |
Adapted from Meunier-Salaün et al. (2014).
Traits in reference to the animal trait ontology for livestock ATOL: http://www.atol-ontology.com/index.php/en/.
Ns=non-significant at P>0.10, ***P<0.001.
Video recordings during 24 h at 17 weeks of age (mean BW 77±8 kg); % on total scan (n=96 LRFI, n=96 HRFI). Least square means, RMSE and P from linear mixed models including the batch, line and sex as fixed effects and interactions between these factors. Analysis was done on the ratio value after arcsin racin transformation.
Feeding patterns were determined during a 3 to 4 weeks-period surrounding 12 (P1), 17 (P2) and 22 (P3) weeks of age (n=140 LRFI; n=125 HRFI). Least square means, RMSE and P from linear mixed models including the batch, line, sex and growth stage (P1=54±7 kg; P2=77±8 kg; P3=96±9 kg) as fixed effects, interactions between these factors and the animal as repeated random effect. Only line effects for period P2 are presented.