Table 1.
Means and SDs of the raw performances, and least square means (along with their standard error) from linear mixed models for growing pigs fed the conventional (CO) or high-fibre (HF) diets
| Means (SD) | Homogenous residual variance | LS Means ± standard error | ||||
|---|---|---|---|---|---|---|
| CO diet | HF diet | P value1 | CO diet | HF diet | P value2 | |
| Growth and feed efficiency | ||||||
| ADG (g/day) | 1027 (86) | 969 (85) | 0.84 | 1027 ± 4 | 971 ± 4 | <0.001 |
| DFI (g/day) | 2578 (230) | 2692 (251) | 0.02 | 2559 ± 8 | 2713 ± 9 | <0.001 |
| DFIJ (MJ/day) | 24.25 (2.16) | 22.08 (2.10) | 0.18 | 24.11 ± 0.75 | 22.30 ± 0.81 | <0.001 |
| FCR | 2.52 (0.15) | 2.78 (0.18) | <0.001 | 2.52 ± 0.01 | 2.78 ± 0.01 | <0.001 |
| FCRJ (MJ/kg) | 23.65 (1.46) | 22.83 (1.50) | 0.51 | 23.65 ± 0.06 | 22.81 ± 0.07 | <0.001 |
| RFI (g/day) | 0.00 (120) | 0.00 (139) | <0.001 | – | +289.2 ± 8.33 | <0.001 |
| Carcass composition | ||||||
| CY (%) | 78.89 (1.26) | 77.46 (1.41) | <0.001 | 78.75 ± 0.05 | 77.60 ± 0.06 | <0.001 |
| BellyP (%) | 12.65 (1.01) | 12.70 (0.96) | 0.21 | 12.66 ± 0.03 | 12.71 ± 0.04 | 0.26 |
| LoinP (%) | 28.37 (1.25) | 28.80 (1.23) | 0.62 | 28.33 ± 0.04 | 28.82 ± 0.04 | <0.001 |
| BackfatP (%) | 7.48 (1.16) | 6.55 (1.08) | 0.07 | 7.48 ± 0.03 | 6.54 ± 0.04 | <0.001 |
| HamP (%) | 24.13 (1.02) | 24.40 (0.96) | 0.13 | 24.17 ± 0.03 | 24.41 ± 0.04 | <0.001 |
| ShoulderP (%) | 23.82 (0.96) | 23.87 (0.96) | 0.95 | 23.82 ± 0.03 | 23.84 ± 0.03 | 0.62 |
| LMP (%) | 58.17 (2.38) | 59.82 (2.23) | 0.08 | 58.36 ± 0.10 | 59.72 ± 0.11 | <0.001 |
| Meat quality | ||||||
| upH | 5.77 (0.19) | 5.77 (0.19) | 0.65 | 5.77 ± 0.01 | 5.78 ± 0.01 | 0.38 |
| L* | 48.12 (3.28) | 47.47 (3.22) | 0.63 | 48.01 ± 0.18 | 47.71 ± 0.19 | 0.11 |
| a* | 8.33 (1.93) | 8.21 (1.83) | 0.20 | 8.31 ± 0.13 | 8.08 ± 0.13 | 0.02 |
| b* | 8.99 (2.07) | 8.71 (2.61) | 0.91 | 9.00 ± 0.05 | 8.75 ± 0.08 | 0.01 |
ADG = average daily gain; DFI = daily feed intake; DFIJ = daily feed intake expressed in MJ/day; FCR = feed conversion ratio; FCRJ = feed conversion ratio expressed in MJ/day divided by kg/day; RFI = residual feed intake; CY = carcass yield; BellyP = belly percentage; LoinP = loin percentage; BackfatP = backfat percentage; HamP = ham percentage; ShoulderP = shoulder percentage; LMP = lean meat percentage; upH = ultimate pH 24 h after the slaughterhouse; L* = lightness of the meat; a* = redness of the meat; b* = yellowness of the meat
P values obtained for a test of Levene of homogeneity of variances.
P values obtained for a Student test between diets. The fixed and random effects are presented in Supplementary Table S2.
Contrast between animals fed the CO and the HF diet in the RFI equation and associated P value.