Table 1.
Analysis of nutrient composition of the commercial concentrate and Coastal Bermudagrass hay offered to pregnant mares in this study
| Nutrient1 | Concentrate2 | Coastal Bermudagrass hay3 |
|---|---|---|
| DE, Mcal/kg | 2.91 | 1.66 |
| CP, % | 15.90 | 9.30 |
| Crude fat, % | 7.40 | 0.90 |
| NDF, % | 33.30 | 69.00 |
| ADF, % | 19.30 | 42.50 |
| Starch, % | 23.80 | 3.60 |
| Ca, % | 1.32 | 0.49 |
| P, % | 0.83 | 0.14 |
| K, % | 1.16 | 0.97 |
| Mg, % | 0.39 | 0.12 |
| Na, % | 0.43 | 0.01 |
| Cl, % | 0.73 | 0.19 |
| S, % | 0.25 | 0.24 |
| Co, mg/kg | 1.77 | 2.32 |
| Fe, mg/kg | 268.00 | 598.00 |
| Zn, mg/kg | 208.00 | 38.00 |
| Cu, mg/kg | 45.00 | 13.00 |
| Mn, mg/kg | 163.00 | 44.00 |
ADF: acid detergent fiber; Ca: calcium; Cl: chlorine; Co: cobalt; CP: crude protein; Cu: copper; DE: digestible energy; Fe: iron; K: potassium; Mg: magnesium; Mn: manganese; Na: sodium; NDF: neutral detergent fiber; P: phosphorus; S: sulfur; Zn: zinc.
1Values presented on a 100% DM basis.
2Concentrate = basal grain diet fed to all horses at 1.18% up to 1.25% BW (as-fed basis) per day with advancing gestation (Triumph Active 12% Pellet Horse Feed, Nutrena).
3Coastal Bermudagrass (Cynodon dactylon) hay was offered ad libitum.