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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.