Table 4.

Most significant sources of variation, percentages of change, P values and goodness-of-fit values in the MLR modeling of percent G+C increments

% G+C increment and determinants Coefficient% ChangeP value
20–24
 Constant1.98<0.0001
 Feed B−1.37−70<0.0001
r 2 0.48<0.0001
25–29
 Constant3.06<0.0001
 Feed ALate 2.09+680.0004
r 2 0.360.0004
30–34
 Constant4.76<0.0001
 Feed ALate 0.94+200.04
r 2 0.140.04
35–39
 Constant7.63<0.0001
 Feed BControl −1.64−210.0004
 Feed AControl 1.27+170.001
r 2 0.58<0.0001
40–44
 Constant12.35<0.0001
 Feed BControl −2.54−21<0.0001
 Farm BWheat12.28+180.002
 Feed AControl 1.39+110.007
r 2 0.69<0.0001
45–49
 Constant12.79<0.0001
 Feed BControl −2.89−230.0002
 Farm BWheat1−1.58−120.05
r 2 0.58<0.0001
50–54
 Constant16.42<0.0001
 Feed BWheat 5.08+31<0.0001
r 2 0.69<0.0001
55–59
 Constant12.63<0.0001
 Feed B1.91+15<0.0001
r 2 0.42<0.0001
60–64
 Constant10.12<0.0001
 Feed BControl 2.85+280.0004
 Farm BWheat1−2.37−230.01
 Farm ALate11.68+170.02
r 2 0.57<0.0001
65–69
 Constant6.51<0.0001
 Feed BControl 5.37+82<0.0001
r 2 0.62<0.0001
70–74
 Constant2.13<0.0001
 Feed BControl 1.75+82<0.0001
r 2 0.51<0.0001
75–79
 Constant0.44<0.0001
 Farm BControl20.35+780.007
 Farm BWheat2−0.27−610.01
 Farm ALate2−0.16−370.04
r 2 0.470.0008