Table 1. Food composition, expressed as means and standard deviation (SD), of canine foods used in digestibility studies.*,† .
| All Dog Foods | Dry Dog Foods | Canned Dog Foods | ||||
| (n = 331 studies) | (n = 259 studies) | (n = 72 studies) | ||||
| Mean | SD | Mean | SD | Mean | SD | |
| Moisture | 22.8 | 27.6 | 8.3 | 0.9 | 74.9 | 2.5 |
| Protein | 18.8 | 7.7 | 22.3 | 4.3 | 6.2 | 1.2 |
| Fat | 11.9 | 5.5 | 14.1 | 3.8 | 3.8 | 1.9 |
| Ash | 4.3 | 2.0 | 5.1 | 1.4 | 1.4 | 0.3 |
| Crude Fiber | 4.1 | 4.3 | 5.0 | 4.5 | 1.0 | 0.7 |
| Gross Energy, kcal/kg | 3860 | 1416 | 4595 | 263 | 1219 | 168 |
*
All analytical values are expressed as percentage of food as fed, unless otherwise indicated.
†
Food composition of the experimental foods was determined by a commercial laboratory (Eurofins Scientific, Inc., Des Moines, IA) using AOAC methods.