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Table 5 Effect of dietary valine : lysine ratio during late gestation on free amino acids in plasma

From: Effects of dietary valine supplementation during late gestation on the reproductive performance and mammary gland development of gilts

Amino acids, μg/mL

Day 0 of lactation

Day 10 of lactation

Dietary treatments

Linear

Quadratic

Dietary treatments

Linear

Quadratic

LV

MV

HV

LV

MV

HV

Val

18.88 ± 0.45c

20.87 ± 0.20b

30.10 ± 0.05a

< 0.001

0.754

24.88 ± 1.28

27.50 ± 1.11

26.58 ± 0.17

0.3182

0.095

Leu

15.86 ± 0.07

15.85 ± 1.47

17.70 ± 0.45

0.159

0.591

25.72 ± 0.78

25.17 ± 0.14

23.81 ± 0.61

0.057

0.475

Ile

9.52 ± 0.59

7.61 ± 0.16

8.94 ± 0.95

0.830

0.080

12.28 ± 0.81

13.38 ± 1.32

10.63 ± 0.53

0.178

0.210

Lys

20.71 ± 0.24

14.66 ± 2.12

17.52 ± 1.65

0.364

0.042

23.45 ± 4.96

29.04 ± 2.48

23.52 ± 1.99

0.820

0.237

Met

4.99 ± 0.44

5.60 ± 0.44

4.49 ± 0.05

0.230

0.134

6.93 ± 0.41

6.75 ± 0.09

6.61 ± 0.51

0.580

0.887

Cys

2.90 ± 0.75

3.21 ± 0.01

3.22 ± 0.33

0.690

0.737

2.50 ± 0.78

2.63 ± 0.39

3.30 ± 0.24

0.298

0.846

Phe

15.12 ± 0.14

13.87 ± 1.28

17.00 ± 0.95

0.126

0.154

21.01 ± 1.29

18.98 ± 0.77

18.53 ± 0.07

0.113

0.308

Thr

31.41 ± 4.86

31.28 ± 4.82

29.02 ± 1.45

0.668

0.899

19.98 ± 1.94

22.84 ± 1.47

22.18 ± 2.74

0.575

0.451

Asp

1.34 ± 0.05

1.85 ± 0.38

1.81 ± 0.06

0.259

0.257

2.36 ± 0.22

1.83 ± 0.02

1.80 ± 0.11

0.047

0.097

Glu

25.39 ± 3.86

28.11 ± 5.41

28.47 ± 1.26

0.634

0.741

23.48 ± 0.85

20.90 ± 1.44

22.44 ± 1.25

0.715

0.079

Arg

22.20 ± 0.94

21.87 ± 1.90

22.16 ± 0.45

0.988

0.844

49.86 ± 4.65

43.48 ± 0.64

40.79 ± 0.95

0.073

0.369

Ala

72.22 ± 7.56

72.79 ± 2.13

72.62 ± 4.73

0.968

0.949

43.80 ± 4.78

47.48 ± 2.35

43.87 ± 2.79

0.886

0.430

Ser

10.85 ± 0.45

9.71 ± 1.00

11.57 ± 0.11

0.293

0.132

14.55 ± 0.37

12.65 ± 1.00

13.43 ± 1.14

0.549

0.223

Gly

41.66 ± 5.65

40.99 ± 1.42

43.16 ± 1.44

0.729

0.795

73.34 ± 3.67

65.20 ± 1.09

65.48 ± 6.64

0.319

0.356

His

12.32 ± 1.22

11.00 ± 0.49

13.34 ± 0.64

0.284

0.165

19.09 ± 0.33

17.07 ± 0.61

16.82 ± 0.69

0.044

0.125

  1. Results were presented as mean values with their standard errors, n = 10. LV: total valine : lysine= 0.63 : 1; MV: total valine : lysine = 0.73 : 1; HV: total valine : lysine = 0.93 : 1. Means not sharing the same letter are different (P < 0.05)