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. 2017 Dec;95(12):5439–5446. doi: 10.2527/jas2017.1995

Table 5.

Least squares means (g per femur) for bone ash, bone Ca, and bone P in pigs fed diets containing from 0.12 to 0.78% standardized total tract digestible (STTD) Ca and from 0.11 to 0.31% STTD P

Total Ca, %
Item STTD Ca, %: 0.12 0.08 0.29 0.18 0.46 0.29 0.61 0.38 0.78 0.49
Bone ash,1,2 g per femur
    0.11% STTD P 73.32 72.94 73.99 70.62 76.08
    0.21% STTD P 69.04 72.42 84.26 83.32 83.81
    0.31% STTD P 73.87 75.43 78.18 81.16 87.68
Bone Ca,3,4 g per femur
    0.11% STTD P 26.98 27.27 25.41 25.01 28.14
    0.21% STTD P 25.47 27.15 30.79 31.37 31.20
    0.31% STTD P 27.26 27.83 28.98 30.63 33.03
Bone P,5,6 g per femur
    0.11% STTD P 12.86 13.06 12.06 11.84 13.03
    0.21% STTD P 12.19 13.06 14.52 14.98 14.65
    0.31% STTD P 13.00 13.24 13.71 14.47 15.58
Ca:P in bone
    0.11% STTD P 2.10:1.00 2.09:1.00 2.11:1.00 2.11:1.00 2.16:1.00
    0.21% STTD P 2.09:1.00 2.08:1.00 2.12:1.00 2.10:1.00 2.13:1.00
    0.31% STTD P 2.10:1.00 2.10:1.00 2.11:1.00 2.12:1.00 2.12:1.00
1

Results indicated that bone ash at different combinations of STTD Ca and STTD P can be described by the following model: 72.4527– 5.4437 × STTD Ca– 12.2622 × STTD P + 146.6110 × STTD Ca × STTD P (P < 0.001).

2

Standard error of the within treatments least squares means = 3.31.

3

Results indicated that bone Ca at different combinations of STTD Ca and STTD P can be described by the following model: 26.6645– 4.7992 × STTD Ca– 4.8919 × STTD P + 69.7578 × STTD Ca × STTD P (P < 0.001).

4

Standard error of the within treatments least squares means = 1.31.

5

Results indicated that bone P at different combinations of STTD Ca and STTD P can be described by the following model: 12.9522– 3.4175 × STTD Ca– 2.9441 × STTD P + 35.5359 × STTD Ca × STTD P (P < 0.001).

6

Standard error of the within treatments least squares means = 0.63.