From: Bacterial direct-fed microbials fail to reduce methane emissions in primiparous lactating dairy cows
Items | Treatment | SEMa | P-value | ||||
---|---|---|---|---|---|---|---|
CTL | PF | LP | LB | Treatment | CTL vs DFMb | ||
Dry matter intake, kg/d | |||||||
High-starch diet | 14.3 | 14.5 | 14.5 | 14.6 | 0.69 | 0.99 | 0.80 |
High-fiber diet | 12.2 | 12.5 | 12.6 | 12.3 | 0.72 | 0.97 | 0.74 |
Water intake, L/d | |||||||
High-starch diet | 53.1 | 62.9 | 62.0 | 59.2 | 5.78 | 0.65 | 0.25 |
High-fiber diet | 56.5 | 50.7 | 47.5 | 51.6 | 3.25 | 0.33 | 0.11 |
Milk, kg/d | |||||||
High-starch diet | 22.1 | 19.7 | 20.9 | 21.6 | 0.79 | 0.23 | 0.18 |
High-fiber diet | 16.3 | 16.9 | 17.0 | 15.6 | 1.40 | 0.89 | 0.90 |
Fat, g/kg milk | |||||||
High-starch diet | 37.0 | 40.1 | 36.1 | 36.1 | 2.57 | 0.66 | 0.88 |
High-fiber diet | 38.7 | 41.4 | 41.1 | 37.7 | 2.85 | 0.75 | 0.68 |
Protein, g/kg milk | |||||||
High-starch diet | 29.7 | 30.6 | 30.1 | 29.9 | 2.10 | 0.99 | 0.83 |
High-fiber diet | 27.1 | 27.8 | 27.9 | 26.3 | 1.38 | 0.82 | 0.91 |
ECMc, kg/d | |||||||
High-starch diet | 22.7 | 21.2 | 21.3 | 22.1 | 0.70 | 0.41 | 0.17 |
High-fiber diet | 16.4 | 17.9 | 18.0 | 15.8 | 1.16 | 0.47 | 0.55 |
Efficiencyd, | |||||||
High-starch diet | 1.60 | 1.46 | 1.48 | 1.52 | 0.08 | 0.65 | 0.27 |
High-fiber diet | 1.35 | 1.45 | 1.42 | 1.28 | 0.05 | 0.20 | 0.62 |
Body weight gain, kg | |||||||
High-starch diet | −6.0 | 11.7¶ | 13.0¶ | 5.7 | 4.98 | 0.08 | 0.02 |
High-fiber diet | −3.0 | 4.2 | 0.5 | −3.2 | 7.85 | 0.89 | 0.71 |