Table 1.
Ingredient composition, analyzed nutrient content, and the formulated nutrient and monensin/tylosin composition of the finishing diet fed during the acclimation and treatment phases
| Ingredient composition, % dry matter (DM)1 | |
|---|---|
| Flaked corn | 57.3 |
| Wet distillers grains | 17.3 |
| Sweet bran plus2 | 17.0 |
| Cotton burrs | 7.1 |
| Corn oil | 1.3 |
| Water plus micro-ingredients3,4 | Approximately 0.05 |
| Total | 100.0 |
| Formulated nutrient and monensin/tylosin concentration | |
| DM | 63.1 |
| Crude protein (CP), % of DM | 14.6 |
| Degradable intake protein, % of DM | 7.8 |
| Crude protein equivalent from non-protein nitrogen (NPN), % of DM | 0.8 |
| Ether extract, % of DM | 5.7 |
| Neutral detergent fiber (NDF), % of DM | 19.9 |
| Physically effective NDF, % of DM | 11.2 |
| Ca, % of DM | 0.8 |
| P, % of DM | 0.5 |
| K, % of DM | 0.7 |
| Mg, % of DM | 0.2 |
| Salt, % of DM | 0.5 |
| S, % of DM | 0.2 |
| Co, mg·kg−1 of DM | 0.5 |
| Cu, mg·kg−1 of DM | 13 |
| I, mg·kg−1 of DM | 0.5 |
| Fe, mg·kg−1 of DM | 84 |
| Mn, mg·kg−1 of DM | 45 |
| Se, mg·kg−1 of DM | 0.36 |
| Zn, mg·kg−1 of DM | 79 |
| Calculated NEm5, Mcal·kg−1 of DM | 2.15 |
| Calculated NEg5, Mcal·kg−1 of DM | 1.49 |
| Calculated monensin6, mg·kg−1 of DM | 46.3 |
| Calculated tylosin7, mg·kg−1 of DM | 8.9 |
1The mean of wet chemistry analysis (DM basis of diet) of 11 weekly ration samples collected during the treatment phase of the study for each of the four treatment groups was 15.5% CP, 0.86% Ca, 0.48% P, 1.2% NPN, 2.0% acid-detergent insoluble nitrogen (ADIN). The range of mean CP for the four treatment groups was 15.4% to 15.7%. Samples analyzed by Servi-Tech Laboratories (Amarillo, TX).
2Sweet Bran wet corn gluten feed (Cargill Corn Milling, Bovina, TX) with added (as fed) calcium carbonate (4%), salt (1.8%), urea (1.1%), and trace mineral premix (0.2%).
3Water was included at 27.2 kg per batch through the micro-ingredient machine for inclusion of lubabegron, monensin, and tylosin. Each batch of manufactured feed weighed approximately 3,629 kg.
4Formulated to provide the following in each kilogram of total diet DM: 2,645 IU Vitamin A, 265 IU Vitamin D, 46.3 mg monensin, 8.9 mg tylosin, and CON, 1.5, 3.5, or 5.5 mg of lubabegron.
5Calculated based on NASEM (2016).
6Provided at approximately 464 mg·hd−1·day−1.
7Provided at approximately 90 mg·hd−1·day−1.