Table 1.
Diet composition
| Ingredient | % of diet DM |
|---|---|
| Dry rolled corn | 57.0 |
| Sweet brana | 20.0 |
| Bromegrass hay | 8.0 |
| DDGSb | 13.03 |
| Limestone | 1.5 |
| Salt | 0.31 |
| Vitamin and mineral premixc,d,e | 0.1441 |
| Rumensin | 0.0135 |
| Analyzed composition | |
| Crude proteinf | 13.9 |
| Neutral detergent fiberf | 23.9 |
| Ether extractf | 4.2 |
| Cu, mg/kg DMg | 13 |
| Fe, mg/kg DMg | 134 |
| Mn, mg/kg DMg | 37 |
| Zn, mg/kg DMg | 130 |
| Calculated compositionh | |
| NEm | 2.05 |
| NEg | 1.39 |
a Branded wet corn gluten feed (Cargill Corn Milling, Blair, NE).
b Dried distillers grains with solubles.
c Premix provided 2,200 IU vitamin A and 25 IU vitamin E/kg diet.
d Wtih the exception of Zn, trace minerals were supplemented at NASEM (2016) recommendations for Co, Cu, I, Mn, and Se from inorganic sources.
e All diets included supplemental Zn at 70 mg Zn/kg DM provided as ZnSO4. Additional Zn (30 mg Zn/kg DM) was provided for respective treatments from ZnSO4 (ZnS), basic ZnCl (ZnB; Phibro Animal Health) or Zn glycinate (ZnG; Gemstone Zn; Phibro Animal Health), to achieve a total of 100 mg supplemental Zn/kg DM.
f Analysis of ZnS TMR conducted by Dairyland Laboratories (Arcadia, WI).
g Analyzed values for trace minerals represent the average of ZnB, ZnG, and ZnS treatments measured by inductively coupled plasma optical emission spectrometry (ICP Optima 7000 DV, Perkin Elmer, Waltham, MA).
h Calculations for net energy of maintenance (NEm) and net energy of gain (NEg) were conducted using NASEM (2016) nutrient values for diet ingredients.