TABLE 1.
Ingredient and chemical composition of diets fed during preliminary (from day −45 to −29 relative to parturition) and treatment (last 28 d of pregnancy) periods1
| Preliminary period | Treatment period | ||
|---|---|---|---|
| Item | Control | Met | |
| Ingredient, g/kg/DM | |||
| Alfalfa haylage | — | 65.5 | 65.5 |
| Corn silage | 347 | 266 | 266 |
| Wheat straw | 33.7 | 265 | 265 |
| Corn grain, ground, dry | — | 126 | 126 |
| Molasses, beet sugar | — | 40.3 | 40.3 |
| Soybean hulls | 157 | 34.6 | 34.6 |
| Soybean meal, 48% CP | 120 | 78.3 | 78.3 |
| Expeller soybean meal2 | — | 58.0 | 58.0 |
| Protein supplement3 | — | 7.80 | 7.80 |
| Urea | 4.60 | 5.90 | 5.90 |
| Soychlor4 | — | 12.3 | 12.3 |
| Salt | 4.00 | — | — |
| Dicalcium phosphate | 5.00 | 5.20 | 5.20 |
| Magnesium sulfate | 19.0 | 20.8 | 20.8 |
| Mineral vitamin mix5 | 4.00 | 1.70 | 1.70 |
| Vitamin A6 | — | 0.30 | 0.30 |
| Vitamin D7 | — | 0.30 | 0.30 |
| Vitamin E8 | 4.00 | 6.00 | 6.00 |
| Biotin9 | — | 7.00 | 7.00 |
| Monensin10 | 0.10 | — | — |
| Rumen-protected Met11 | — | — | 0.90 |
| Chemical composition, g/kg/DM | |||
| Crude protein | 139 | 156 | 157 |
| Neutral detergent fiber | 545 | 408 | 407 |
| Acid detergent fiber | 369 | 275 | 274 |
| Nonfiber carbohydrate | 247 | 349 | 349 |
| Ether extract | 18.1 | 23.2 | 23.3 |
1
CP, crude protein; DM, dry matter.
2
SoyPlus, West Central Soy.
3
ProvAAl AAdvantage, Perdue AgriBusiness.
4
West Central Soy.
5
Composition in kg−1 DM: 50 Mg, 100 S, 75 K, 2.0 Fe, 3.0 Zn, 3.0 Mn, 5 Cu, 0.03 I, 0.04 Co, and 0.15 Se per kg DM. Vitamins in milligrams per kilogram DM: retinol 220, cholecalciferol 66, and α-tocopherol 770.
6
Contained 0.9 g/kg retinol.
7
Contained 125 g/kg cholecalciferol.
8
Contained 29.5 g/kg α-tocopherol.
9
ADM Animal Nutrition.
10
Rumensin, Elanco Animal Health.
11
Mepron, Evonik Nutrition & Care GmbH.