Table 5 Serum AAs and NH₃ [mg/dL] in piglets within 48 h p.n. depending on farrowing system and weight class (mean ± SD)

Light

n

8

10

12

BW [kg]

1.10^B ± 0.04

1.16^B ± 0.10

1.16^B ± 0.11

Arginine

2.10^ab ± 0.90

2.65^a ± 1.27

1.57^b ± 0.39

Leucine

2.85^a ± 0.76

2.72^ab ± 0.89

2.01^b ± 0.70

Lysine

4.92 ± 2.47

4.01 ± 1.26

3.43 ± 1.34

Methionine

0.80 ± 0.22

0.72 ± 0.67

0.59 ± 0.30

Proline

10.5^ab ± 3.67

12.1^a ± 2.92

8.42^b ± 3.45

Threonine

2.30 ± 0.99

2.77 ± 1.0

1.83 ± 1.09

Tryptophan^*

0.60 ± 0.09

0.59 ± 0.24

0.67 ± 0.20

Valine

4.35 ± 0.98

4.66 ± 1.96

3.74 ± 1.40

NH₃

6.68 ± 0.99

6.91 ± 1.42

7.45 ± 1.52

Heavy

n

16

14

12

BW [kg]

1.78^A ± 0.24

1.77^A ± 0.24

1.96^A ± 0.32

Arginine

2.93 ± 1.60

2.45 ± 0.98

1.92 ± 0.42

Leucine

3.21^a ± 1.19

2.84^ab ± 1.19

2.19^b ± 0.50

Lysine

5.32 ± 2.76

4.07 ± 2.55

3.55 ± 1.12

Methionine

1.03 ± 0.92

0.94 ± 0.93

0.80 ± 0.31

Proline

10.0^ab ± 4.06

11.5^a ± 4.22

7.37^b ± 2.69

Threonine

3.00^ab ± 1.20

2.92^a ± 0.77

2.15^b ± 0.72

Tryptophan^**

0.66 ± 0.23

0.68 ± 0.39

0.49 ± 0.14

Valine

5.47 ± 2.08

5.03 ± 2.10

4.01 ± 0.61

NH₃

6.58 ± 1.53

7.33 ± 1.24

7.26 ± 1.31