Table 1.
Diet ingredients and composition.
| Ingredient | Unit | Diet 1 | Diet 2 | Diet 3 | Diet 4 |
|---|---|---|---|---|---|
| Steam flaked barley | % as fed | 21.5 | 28.5 | 37.5 | 47.0 |
| Steam flaked wheat | % as fed | 21.0 | 22.5 | 14.5 | 19.0 |
| Finisher supplement | % as fed | 5.0 | 5.2 | 0.0 | 1.7 |
| Growth supplement | % as fed | 0.0 | 0.0 | 5.0 | 3.5 |
| Molasses | % as fed | 12.0 | 10.1 | 4.8 | 5.0 |
| Vegetable oil | % as fed | 0.0 | 1.2 | 1.4 | 1.5 |
| Brewers sweet grain | % as fed | 0.0 | 0.0 | 15.0 | 8.0 |
| Sunflower meal | % as fed | 5.5 | 5.0 | 1.5 | 0.0 |
| Corn silage | % as fed | 12.0 | 12.0 | 12.8 | 9.8 |
| Barley straw | % as fed | 12.0 | 9.5 | 7.5 | 4.5 |
| Lucerne hay | % as fed | 11.0 | 6.0 | 0.0 | 0.0 |
| Chemical composition | |||||
| Dry matter | % | – | – | 94.8 | 95.2 |
| Moisture | % | – | – | 5.2 | 4.9 |
| Acid detergent fibre | % | – | – | 9.0 | 7.0 |
| Dry matter digestibility | % | – | – | 81.0 | 85.0 |
| Inorganic ash | % | – | – | 6.0 | 6.0 |
| Organic matter | % | – | – | 94.0 | 94.0 |
| Crude fat | % | – | – | 4.0 | 4.1 |
| Crude protein | % | 14.1a | 13.8a | 12.5 | 12.4 |
| Neutral detergent fibre | % DM | 29.3a | 25.6a | 20.0 | 17.0 |
| Metabolizable energy | MJ/kg DM | 10.9a | 11.6a | 13.0 | 13.5 |
| Ionophore (monesin) | ppm | 21.3a | 22.2a | 23.4a | 23.9a |
| Net energy of gain | MJ/kg DM | 4.4a | 4.9a | 5.5a | 6.0a |
| Net energy of maintenance | MJ/kg DM | 7.0a | 7.6a | 8.3a | 8.9a |
aValues are estimates from feed composition tables of the ingredients making up the diet.