Table 4. Effect of the proportion of dietary wheat and pea starch on crop, ileum and caeca content pH of broilers at 28 d of age.
| Diets | SEM | Regression | R2 | Equation | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 01 | 20 | 40 | 60 | 80 | 100 | |||||
| Crop | 5.19 | 4.89 | 4.92 | 4.84 | 5.00 | 5.01 | 0.045 | Q = 0.042 | 0.05 | y = 9x10-5x2–0.01x + 5.14 |
| Ileum | 6.85 | 6.15 | 6.47 | 6.13 | 6.26 | 6.34 | 0.082 | NS | - | - |
| Caeca | 6.50 | 6.59 | 6.48 | 6.53 | 6.59 | 6.26 | 0.036 | NS | - | - |
1 Diets denominations indicate the percentage of pea starch in the starch fraction of the diet.
Data was applied natural logarithm transformation; SEM: pooled standard error of the mean; P = P value; Q: quadratic regression; number of replications = 4 pens.