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Table 7 Serum AAs and NH3 [mg/dL] in piglets on weaning depending on farrowing system and weight class (mean ± SD)

From: Immunocrit, serum amino acid concentrations and growth performance in light and heavy piglets depending on sow’s farrowing system

  FC LH GH
Light n 8 8 10
BW [kg] 6.26Bab ± 1.14 7.74Ba ± 1.71 5.31Bb ± 1.62
Serum AAs [mg/dL]
Arginine 3.45 ± 0.81 3.41 ± 0.74 2.75 ± 0.96
Leucine 2.70a ± 0.58 2.07b ± 0.37 2.75a ± 0.53
Lysine 3.30ab ± 0.89 2.72b ± 0.67 3.48a ± 0.78
Methionine 1.24 ± 0.41 1.05 ± 0.37 1.28 ± 0.72
Proline 8.27Aa ± 1.14 6.29b ± 1.38 7.29ab ± 2.36
Threonine 3.99a ± 1.51 2.92ab ± 1.44 2.63b ± 1.01
Tryptophan* 0.78 ± 0.34 0.93 ± 0.34 0.95 ± 0.26
Valine 3.14a ± 0.45 2.19Bb ± 0.29 3.50a ± 0.89
NH3 8.40 ± 1.35 7.15 ± 1.04 8.00 ± 1.79
Heavy n 16 14 11
BW [kg] 9.18A ± 1.97 9.81A ± 1.88 8.97A ± 1.75
Serum AAs [mg/dL]
Arginine 3.80a ± 0.65 3.40ab ± 0.75 3.11b ± 0.54
Leucine 2.75a ± 0.66 2.35b ± 0.48 3.03a ± 0.52
Lysine 3.49ab ± 1.06 2.92b ± 0.71 4.13a ± 1.19
Methionine 1.11 ± 0.25 1.12 ± 0.22 1.15 ± 0.40
Proline 6.87Ba ± 1.54 6.39a ± 1.19 8.14b ± 1.30
Threonine 3.39a ± 1.31 3.08ab ± 0.86 2.36b ± 0.89
Tryptophan** 1.03 ± 0.54 0.84 ± 0.25 0.89 ± 0.33
Valine 3.19a ± 0.62 2.68Ab ± 0.50 3.39a ± 0.68
NH3 7.24 ± 0.99 7.25 ± 0.80 6.47 ± 1.74
  1. FC Farrowing crate, LH Loose housing, GH Group housing, BW Body weight [kg], light (birth weight 24 h p.n.) < 1.4 kg, heavy (birth weight 24 h p.n.) ≥ 1.4 kg
  2. a,b Values within a row with different superscripts differ significantly at p < 0.05; A,B Values within a column with different superscripts differ significantly at p < 0.05
  3. * FC: n = 3; LH: n = 5; GH: n = 4; ** FC: n = 8; LH: n = 9; FC: n = 7 (only measurable with these piglets)