| Â | Category1 | Sex | Â | P-value2 |
|---|
Item4 | IUGR | NORM | Females | Castrates | SEM3 | Category | Sex | Category × Sex |
|---|
Bone mass, % |
Weaning | 2.35 | 2.21 | 2.28 | 2.28 | 0.114 | 0.50 | 0.97 | 0.15 |
End of starter period | 1.65 | 1.80 | 1.74 | 1.71 | 0.017 |  < 0.001 | 0.07 | 0.68 |
End of finisher period | 2.04 | 2.05 | 2.15 | 1.94 | 0.065 | 0.96 |  < 0.001 | 0.56 |
Bone mineral density, % |
Weaning | 0.008 | 0.005 | 0.006 | 0.006 | 0.0007 | 0.03 | 0.87 | 0.29 |
End of starter period | 0.002 | 0.003 | 0.002 | 0.002 | 0.00005 | 0.02 | 0.17 | 0.90 |
End of finisher period | 0.0012 | 0.0011 | 0.0012 | 0.0011 | 0.00002 | 0.14 |  < 0.01 | 0.06 |
Lean mass, % |
Weaning | 86.7 | 87.7 | 87.0 | 87.4 | 0.58 | 0.27 | 0.65 | 0.90 |
End of starter period | 90.0 | 90.1 | 90.2 | 90.0 | 0.19 | 0.53 | 0.37 | 0.97 |
End of finisher period | 78.8 | 79.7 | 80.7 | 77.8 | 0.50 | 0.59 | 0.07 | 0.02 |
Fat mass, % |
Weaning | 11.0 | 10.1 | 10.4 | 10.7 | 0.61 | 0.41 | 0.64 | 0.91 |
End of starter period | 8.4 | 8.1 | 8.1 | 8.4 | 0.20 | 0.22 | 0.31 | 0.95 |
End of finisher period | 19.1 | 18.3 | 17.2 | 20.2 | 0.52 | 0.47 | 0.04 | 0.01 |
- Effect of classifying the pigs based on the brain-to-liver weight ratio (BrW/LW) at birth and sex on the relative bone mass, bone mineral density, lean mass and fat mass at weaning, end of the starter period, and end of the finisher period
- 1Category: IUGR = pigs with the highest BrW/LW; NORM: pigs with the lowest BrW/LW
- 2P-value for the main effect of the category, sex, and their interaction
- 3Pooled SEM
- 4Percentage of total mass
- Number of pigs scanned at weaning: IUGR = 12; NORM = 11; females = 15; castrates = 8; IUGR females = 8; IUGR castrates = 4; NORM females = 7; NORM castrates = 4
- Number of pigs scanned in the starter period: IUGR = 12; NORM = 12; females = 12; castrates = 12; IUGR females = 7; IUGR castrates = 5; NORM females = 5; NORM castrates = 7
- Number of pigs scanned in the finisher period: IUGR = 11; NORM = 11; females = 11; castrates = 11; IUGR females = 6; IUGR castrates = 5; NORM females = 5; NORM castrates = 6
- Significant interaction between category and sex: IUGR females: 79.5abc %; NORM females: 81.8b %; IUGR castrates: 78.1ac %; NORM castrates: 77.6c %. Different letters (a, b, c) indicate statistically significant (P < 0.05) differences between the groups
- Significant interaction between category and sex: IUGR females: 18.3ab %; NORM females: 16.0b; IUGR castrates: 19.9a %; NORM castrates: 20.5a %. Different letters (a, b) indicate statistically significant (P < 0.05) differences between the groups
