Table 1.
Ingredients, DM, chemical composition, metabolisable energy (ME) content and protein–fat–carbohydrate ratios of the experimental protein–fat–carbohydrate (PFC) and protein–fat (PF) diets
| Experimental diets | ||
|---|---|---|
| PFC | PF | |
| Ingredient composition (g/kg diet) | ||
| Salmon by-products | 220 | 220 |
| Chicken by-products | 400 | 335 |
| Beef/pig by-products | 270 | |
| Cattle rumen | 220 | 170 |
| Precooked wheat | 155 | |
| Vitamin and mineral mixture* | 5 | 5 |
| Yttrium oxide | 0·83 | 0·83 |
| DM (g/kg diet) | 454 | 410 |
| Chemical composition (g/kg DM) | ||
| Ash | 75 | 81 |
| Crude protein | 339 | 369 |
| Crude fat | 323 | 514 |
| Carbohydrates | ||
| Starch | 196 | 2 |
| Dietary fibre | 73 | 20 |
| NSP | 35 | 4 |
| Lignin | 38 | 16 |
| Energy | ||
| ME (MJ/kg DM)† | 22·0 | 26·9 |
| Protein:fat:carbohydrate ratio (% of ME) | 26:58:16 | 24:75:1 |
Containing per kg mixture: vitamin A (retinol), 1·05 mg; vitamin D3, 12·5 μg; vitamin E, 150·00 mg; thiamin, 1·50 mg; riboflavin, 2·80 mg, vitamin B6, 1·80 mg; vitamin B12, 0·02 mg; niacin, 9·00 mg; folic acid, 0·20 mg; pantothenic acid, 10·00 mg; biotin, 1500 mg; choline, 250·00 mg; vitamin C, 15·00 mg; Fe, 118 mg; Mn, 20 mg; Zn, 30 mg; Cu, 3·8 mg; I, 0·4 mg; Se, 0·16 mg.
Determined by conversion factors (18·4 kJ/g protein, 39·8 kJ/g fat and 17·6 kJ/g carbohydrates) multiplied by the respective apparent total tract digestibility values for protein, fat and carbohydrates (see Table 2).