Table 7.
Items | Level of montmorillonite (%)
|
SEM | p value
|
||||||
---|---|---|---|---|---|---|---|---|---|
0.0 | 0.5 | 1.0 | 2.5 | 5.0 | ANOVA | Linear | Quadratic | ||
Weight (g) | 22.3 | 22.4 | 22.0 | 20.9 | 21.2 | 2.57 | 0.81 | 0.26 | 0.53 |
Breaking strength (N) | 305.2 | 270.0 | 268.3 | 294.3 | 302.8 | 46.99 | 0.50 | 0.75 | 0.26 |
Mineral content (% of ash) | |||||||||
Calcium (%) | 18.82 | 18.45 | 18.75 | 18.90 | 19.26 | 1.48 | 0.91 | 0.47 | 0.64 |
Phosphorus (%) | 8.49 | 8.37 | 8.37 | 8.48 | 8.43 | 0.68 | 0.99 | 0.99 | 0.97 |
Potassium (%) | 0.27 | 0.21 | 0.19 | 0.18 | 0.12 | 0.04 | <0.01 | <0.01 | <0.01 |
Sodium (%) | 2.04 | 1.62 | 1.52 | 1.31 | 0.88 | 0.27 | <0.01 | <0.01 | <0.01 |
Magnesium (%) | 1.32 | 1.17 | 1.09 | 0.96 | 0.64 | 0.15 | <0.01 | <0.01 | <0.01 |
Zinc (mg/g) | 0.60 | 0.57 | 0.47 | 0.43 | 0.34 | 0.06 | 0.02 | 0.03 | 0.10 |
Iron (mg/g) | 0.29 | 0.27 | 0.17 | 0.21 | 0.14 | 0.05 | <0.01 | <0.01 | <0.01 |
Copper (mg/kg) | 6.60 | 4.43 | 3.09 | 4.03 | 3.00 | 1.70 | <0.01 | <0.01 | <0.01 |
Manganese (mg/kg) | 11.09 | 8.78 | 7.91 | 6.34 | 4.75 | 1.65 | <0.01 | <0.01 | <0.01 |
Values are the means of six replicates.