Table 1.
Feedlot diet composition and nutrient analysis (DM)
| Ingredient1 | Receiving | Grower | Ration 1 | Ration 2 | Ration 3 | Ration 4 | Ration 5 |
|---|---|---|---|---|---|---|---|
| Wheat straw, % | 30.0 | 5.0 | 5.0 | 5.0 | 5.0 | 3.0 | 3.0 |
| Alfalfa hay, % | 30.0 | 5.0 | 5.0 | 5.0 | 5.0 | 3.0 | 3.0 |
| Corn, whole, % | 30.0 | 40.0 | 50.0 | 60.0 | 70.0 | 80.0 | 85.0 |
| Haylage, % | 10.0 | 50.0 | 40.0 | 30.0 | 20.0 | 15.0 | 10.0 |
| Total, % | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Analysis | |||||||
| CP, % | 15.8 | 15.1 | 13.7 | 13.8 | 12.3 | 12.3 | 11.3 |
| Fiber, % | 18.3 | 15.8 | 13.0 | 12.8 | 8.9 | 10.8 | 6.7 |
| TDN, % | 69.6 | 72.9 | 76.2 | 76.5 | 81.3 | 78.9 | 84.0 |
| NEm, Mcal/45.4 kg | 73.54 | 78.2 | 82.8 | 83.2 | 89.8 | 86.5 | 93.5 |
| NEg, Mcal/45.4 kg | 46.10 | 50.2 | 54.2 | 54.6 | 60.3 | 57.4 | 63.4 |
| Calcium, % | 1.44 | 1.37 | 1.10 | 1.02 | 0.85 | 0.82 | 0.66 |
| Phosphorus, % | 0.26 | 0.30 | 0.32 | 0.30 | 0.31 | 0.28 | 0.31 |
1Feedlot medicated vitamin–mineral supplement. Added to total mixed ration at the rate of 454 gm per steer daily: 12% calcium, 6% phosphorus, 17.5% salt, 2.75% magnesium, cobalt 38.0 ppm, copper 2,200.0 ppm, iodine 200.0 ppm, manganese 3,300.0 ppm, selenium 35.0 ppm, zinc, 7,500.0 ppm, vitamin A 250,000 IU/454 gm, vitamin D 25,000 IU/454 gm, vitamin E 250 IU/454 gm, monensin sodium 250 mg/454 gm.