Table 1. Diet composition.
| CARB | HF | |
|---|---|---|
| GE (MJ kg−1) | 18.0 | 25.2 |
| ME (MJ kg−1) | 15.0 | 21.4 |
| % carbohydrate | 66.0 | 21.0 |
| % protein | 23.0 | 19.0 |
| % fat | 11.0 | 60.0 |
| Crude protein | 20.8 | 24.1 |
| Crude fat | 4.2 | 34.0 |
| Crude fiber | 5.0 | 6.0 |
| Crude ash | 5.6 | 6.1 |
| Starch | 48.8 | 1.1 |
| Sugar | 10.8 | 8.2 |
| Dextrins | — | 15.6 |
| Sodium | 0.2 | 0.2 |
| Casein | 24.0 | 27.7 |
| Corn starch | 49.8 | — |
| Maltodextrin | — | 15.8 |
| Glucose | 10.0 | — |
| Sucrose | — | 8.0 |
| Cellulose | 5.0 | 6.0 |
| Vitamin premix | 1.0 | 1.2 |
| Mineral/trace elements | 6.0 | 6.1 |
| L-cystine | — | 0.4 |
| Choline chloride | 0.2 | 0.3 |
| Salt (NaCl) | — | 0.1 |
| Butylhydroxytoluol | — | <0.1 |
| Beef tallow (premier jus) | — | 31.0 |
| Soybean oil | 4.0 | 3.0 |
Abbreviations: CARB, carbohydrate; GE, gross energy; HF, high-fat; ME, metabolizable energy calculated with the Atwater factors.
Nutrient contents are given in percentages (g 100 g−1). All experimental diets were ordered from Ssniff GmbH (Soest, Germany): CARB, cat. no. E15000-04; HF, E15741-34. The composition of the standard laboratory chow diet (Ssniff GmbH, cat. no. V1534) used for 2 weeks prior to dietary treatment was: dry matter, 87.7; crude protein, 19.0; crude fat, 3.3; crude fiber, 4.9; crude ash, 6.4; starch, 36.5; sugar/dextrins, 4.7; GE, 16.3; ME, 12.8; % carbohydrate, 58; % protein, 33; % fat, 9.