Table 3.
Placket-Burman design and statistical analysis of three attractants.
| Protein | Source | Level |
Coefficient estimate1 | F Value | Prob > F | Significant2 | |
|---|---|---|---|---|---|---|---|
| -1 | 1 | ||||||
| Chicken liver | Model | 6.57 | 0.0201 | ∗∗ | |||
| T (°C) | 50 | 60 | -0.80 | 1.23 | 0.31 | ||
| S/L | 3:1 | 1:1 | 1.58 | 4.82 | 0.0705 | ∗ | |
| E/S (%) | 0.4 | 0.8 | 0.18 | 0.06 | 0.8106 | ||
| t (h) | 2 | 4 | 2.45 | 11.55 | 0.0145 | ∗∗ | |
| pH | 6 | 7 | 2.81 | 15.19 | 0.008 | ∗∗ | |
| L. edodes | Model | 6.07 | 0.0242 | ∗∗ | |||
| T (°C) | 45 | 55 | 1.28 | 5.01 | 0.0665 | ∗ | |
| S/L | 1:6 | 1:10 | -0.32 | 0.32 | 0.5945 | ||
| E/S (%) | 0.2 | 0.6 | -1.59 | 7.70 | 0.0322 | ∗∗ | |
| t (h) | 2 | 4 | 2.38 | 17.33 | 0.0059 | ∗∗ | |
| pH | 4.5 | 5.5 | -0.02 | 0.01 | 0.8954 | ||
| T. molitor | Model | 44.37 | 0.0001 | ∗∗ | |||
| T (°C) | 50 | 60 | 0.66 | 1.83 | 0.2249 | ||
| S/L | 1:1 | 1:5 | -5.84 | 141.43 | <0.0001 | ∗∗ | |
| E/S (%) | 0.8 | 1.6 | 3.07 | 39.12 | 0.0008 | ∗∗ | |
| t (h) | 3 | 5 | 2.26 | 21.07 | 0.0037 | ∗∗ | |
| pH | 8 | 9 | 2.11 | 18.41 | 0.0051 | ∗∗ | |
1
If the coefficient estimate was a positive number, the level of factor was positively related to DH (%). And if the coefficient estimate was a negative number, the level of factor was negatively related to DH (%).
2
‘∗’ stands for P < 0.1, and ‘∗∗’ stands for P < 0.05.