Table 6.
Relationship between true protein digestibility and the amount of the dietary protein contributed by whole grains or protein fractions (expressed as dry matter) in canine foods.
| Canine | Rice | Corn | Soy | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Whole Rice (n = 301) | Rice Protein Concentrate (n = 7) | Whole Corn (n = 219) | Corn Gluten Meal (n = 178) | Soybean Meal (n = 85) | Soybean Protein Isolate (n = 11) | |||||||
| Intercept | Slope | Intercept | Slope | Intercept | Slope | Intercept | Slope | Intercept | Slope | Intercept | Slope | |
| coefficient | 88.5 | 0.105 | 92.3 | −0.030 | 89.0 | −0.085 | 89.5 | −0.029 | 87.5 | −0.038 | 91.1 | 0.058 |
| std error | 0.316 | 0.036 | 3.07 | 0.11 | 0.451 | 0.036 | 0.804 | 0.03 | 0.716 | 0.048 | 1.19 | 0.05 |
| Tτ | 280.4 | 2.9 | 30.0 | −0.27 | 197.3 | −2.367 | 111.4 | −0.948 | 122.1 | −0.785 | 76.5 | 1.157 |
| p > |t| | <0.001 | 0.003 | <0.001 | 0.798 | <0.001 | 0.019 | <0.001 | 0.345 | <0.001 | 0.435 | <0.001 | 0.277 |
τ Student’s t value.