Table 5 The portal amino acids patterns of the piglets in different diet treatments after 2h and 4h of the morning feeding or afternoon feeding

Lys

6.76^b

7.88^a

5.24^c

6.34^b

0.23

7.98^a

5.85^c

6.98^b

5.41^c

0.23

 < 0.001

 < 0.001

 < 0.001

Met

6.17^ab

6.31^a

4.70^c

5.39^b

0.20

7.38^a

6.59^b

4.77^c

3.85^d

0.20

 < 0.001

 < 0.001

 < 0.001

Thr

35.69^a

33.86^ab

32.49^b

33.19^b

0.48

34.71^ab

33.36^bc

34.88^a

32.28^c

0.48

0.001

0.002

 < 0.001

Leu

17.18^b

18.71^a

15.97^c

14.42^d

0.38

17.54^a

18.32^a

16.35^b

14.07^c

0.38

 < 0.001

 < 0.001

 < 0.001

Ile

8.88^bc

11.35^a

9.21^b

8.42^c

0.23

11.67^a

10.60^b

8.81^c

6.79^d

0.23

 < 0.001

 < 0.001

 < 0.001

Val

15.27^bc

18.48^a

14.73^c

16.23^b

0.37

19.33^a

17.93^b

15.06^c

12.39^d

0.37

 < 0.001

 < 0.001

 < 0.001

Phe

7.31^b

8.18^a

7.40^b

6.65^b

0.25

9.67^a

8.29^b

6.27^c

5.33^d

0.25

0.002

 < 0.001

 < 0.001

Arg

17.69^a

16.70^a

11.89^c

13.37^b

0.31

16.89^a

13.86^c

14.46^bc

14.80^b

0.31

 < 0.001

 < 0.001

 < 0.001

His

7.48^b

7.24^b

5.96^c

9.66^a

0.27

8.99^a

7.64^b

6.88^b

5.88^c

0.27

 < 0.001

 < 0.001

 < 0.001

Glu

22.40^a

19.05^b

22.36^a

19.21^b

0.47

25.43^a

24.39^a

20.48^b

12.73^c

0.47

 < 0.001

 < 0.001

 < 0.001

Gly

53.17^b

56.81^a

53.55^b

58.19^a

0.61

53.62^b

64.11^a

52.89^b

51.10^c

0.61

 < 0.001

 < 0.001

 < 0.001

Tyr

12.25^ab

12.86^a

12.49^a

11.38^b

0.13

15.47^a

12.56^b

10.91^c

10.40^c

0.30

0.009

 < 0.001

 < 0.001

Pro

24.71^b

30.76^a

25.02^b

31.53^a

0.45

29.78^a

27.56^b

26.77^b

27.91^b

0.45

 < 0.001

0.001

 < 0.001

Ala

44.92^ab

45.26^a

43.25^b

42.64^b

0.60

46.21^b

50.59^a

46.29^b

32.96^c

0.60

0.011

 < 0.001

 < 0.001