Table 1.
Nutrient composition of free-choice grass hay and protein supplement (approximately 2.1 kg/d) offered to Angus × Holstein calves from 2 to 8 mo of age. Calves were exposed in utero to choline through dam alimentation of different levels and formulations of rumen protected choline
| Ingredient | ||
|---|---|---|
| Item | Grass hay | Protein supplement1 |
| Chemical composition2 | ||
| DM, % | 90.9 | 89.9 |
| CP, % | 14.5 | 16.3 |
| NDFom, % | 53.2 | 11.3 |
| ADF, % | 40.1 | 5.5 |
| Starch, % | 1.6 | 48.0 |
| Ether extract, % | 2.3 | 3.3 |
| Ash, % | 10.1 | 6.6 |
| NEG, Mcal/kg | 0.64 | 1.38 |
1Supplement ingredients on as-fed basis include ground corn (62%); soybean meal (14.5%); expeller soybean meal (5%); wheat mids (5%); soy hulls (4%); mineral premix (3.22%); molasses (5.1%); potassium chloride (0.2%); yeast (Diamond V; 0.63%); vitamin A (0.03%); vitamin D (0.01%); Vitamin E (0.15%).
2Reported as % of DM unless otherwise noted.