Table 1 Ingredients and chemical composition of the high-starch and high-fiber control diets used in this study
From: Bacterial direct-fed microbials fail to reduce methane emissions in primiparous lactating dairy cows
Items | Control dietsa | |
|---|---|---|
High-starch diet | High-fiber diet | |
Ingredients, % of DM | ||
Corn silage | 44.0 | _b |
Grass silage | _ | 55.0 |
Hay | 11.0 | _ |
Grain mixc | 34.2 | _ |
Citrus pulp | _ | 12.0 |
Dehydrated beet pulp | _ | 20.0 |
Molasses, beet | _ | 5.0 |
Soybean meal | 8.7 | 8.0 |
Urea | 1.0 | _ |
Cane molasses | 1.1 | _ |
Chemical composition, % of DM | ||
OM | 92.2 | 85.1 |
CP | 12.5 | 12.2 |
NDF | 35.4 | 48.4 |
ADF | 19.5 | 29.3 |
Starch | 27.4 | 1.8 |
Ether extract | 2.3 | 2.3 |
Fatty acids (FA), g/100 g of total FA | ||
12:0 | 0.17 | 0.34 |
14:0 | 0.35 | 0.89 |
16:0 | 20.7 | 21.7 |
cis-9 16:1 | 0.72 | 2.03 |
18:0 | 2.57 | 2.13 |
cis-9 18:1 | 19.4 | 9.8 |
18:2n-6 | 44.9 | 28.5 |
18:3n-3 | 7.3 | 28.0 |
GE, MJ/kg DM | 16.8 | 16.9 |