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Table 2 Body composition characteristics of 23 wk old castrated pigs in control and feed withdrawal (FW) treatments.

From: Periodic 48 h feed withdrawal improves glucose tolerance in growing pigs by enhancing adipogenesis and lipogenesis

   Treatments   Probability
Factor Control FWx1 FWx4 value
n 9 9 9  
Slaughter weight (Wt), kg 133.8 ± 3.0 136.3 ± 1.9 138.7 ± 3.4 0.4861
Hot carcass Wt, kg 111.2 ± 2.2 113.4 ± 1.6 115.2 ± 2.8 0.4434
Kidney fat (kg) 3.1 ± 0.2 2.9 ± 0.2 3.1 ± 0.2 0.7021
Carcass fat depth (mm) 24.0 ± 0.5 26.3 ± 1.1 26.9 ± 1.2 0.1238
Carcass lean depth (mm) 56.0 ± 1.0 58.6 ± 1.2 58.6 ± 1.6 0.2807
Lean yield estimate (%) 58.0 ± 0.2 57.5 ± 0.4 57.3 ± 0.4 0.2404
Yield/100 kg slaughter, Wt 94.4 ± 5.8 86.9 ± 7.5 74.3 ± 8.4 0.1668
Molecular marker; Muscle     
PPARγ - GADPH (% of control) 100 ± 150ab 267 ± 154a 57 ± 153b 0.0516
Total adipocyte number in muscle     
Cells/mg of muscle fat 860 ± 204.9 890 ± 9.0 754 ± 144.7 0.8339
Cells/mg of muscle 663 ± 158 748 ± 140.1 560 ± 135.0 0.6607
  1. Control (no FW),
  2. Single feed withdrawal (FWx1) for 48 h at 19 wk of age
  3. Multiple feed withdrawal (FWx4) for 24 h at age 7 and 11 wk and for 48 h at 15 and 19 wk treatments
  4. Values are expressed as mean ± SEM.
  5. Carcass fat and lean depth - Destron system [37]
  6. The fat depth measurement location is between the 3rd and 4th last ribs, 7.0 cm over from the midline.
  7. The instrument used for grading was the Anitech PG-100 grading probe (Anitech Information System Inc., Markham, Ontario).
  8. The % estimated lean yield is based on a quadratic equation which is also used as a reference for slaughter plants:
  9. (68.1863-0.7833(F) + 0.0689(M) + 0.0080(F2) - 0.0002(M2) + 0.0006(FM). Where F is fat thickness in mm and M is muscle thickness in mm.