Table 6 Concentration of Ca, P, and inositol in plasma and quantity and concentration of bone ash in pigs fed diets containing 0, 250, 500, 1,000, 2,000, or 4,000 units of microbial phytase (FTU)/kg of complete diet^a

d −1

 Plasma

  Ca, mg/dL

9.87

9.78

9.88

9.53

9.80

10.00

-

-

-

  P, mg/dL

10.32

10.23

9.53

9.82

10.48

10.53

-

-

-

  Inositol, μmol/L

8.5

6.8

7.3

11.5

10.5

7.2

-

-

-

d 23

 Plasma^b

  Ca, mg/dL

11.10

10.84

11.35

10.94

11.28

11.75

0.49

0.233

0.762

  P, mg/dL

9.89

12.16

13.64

14.27

15.49

16.28

0.51

 < 0.001

 < 0.001

  Inositol, μmol/L

80.7

81.1

97.4

86.4

103.0

112.1

10.9

0.024

0.716

 Bone

  Ash, g

1.88

2.48

2.61

2.92

3.34

3.35

0.09

 < 0.001

 < 0.001

  Ash, %

48.3

50.4

53.1

53.9

55.2

55.5

0.60

 < 0.001

 < 0.001