Arbejdsrapport fra Miljøstyrelsen Nr. 11/2005 – Evaluering af mulige tiltag til reduktion af landbrugets metanemissioner –Table 1.2. Simulation results with Karoline.

Evaluering af mulige tiltag til reduktion af landbrugets metanemissioner

Table 1.2. Simulation results with Karoline.

Simulation no.	1	2	3	4	5	6	7	8	9	10	11	12	13
Cow weight, kg	600	600	600	600	600	600	600	600	600	600	600	600	600
Week of lactation	18	18	18	4	32	18	18	18	18	18	18	18	18
FU_C/d	14.8	19.7	24.6	19.7	19.7	15.4	21.2	15.3	20.4	19.6	21.2	19.8	19.8
ECM¹, kg/d	24.8	31.7	37.0	38.2	29.0	25.8	33.4	25.1	31.7	30.3	32.6	30.6	31.5
Methane production:
g/d	317	387	450	387	387	375	373	299	380	392	319	392	356
g/kg DM	21.1	19.4	18.0	19.4	19.4	22.1	17.7	17.6	19.0	19.6	15.9	19.6	17.8
g/kg milk	12.9	12.1	11.7	10.3	13.9	15.2	10.3	11.2	11.6	11.8	9.2	12.5	10.6
mol/mol C fermented	0.059	0.056	0.054	0.056	0.056	0.066	0.052	0.056	0.056	0.058	0.048	0.058	0.053
MJ/MJ GE²	0.065	0.060	0.056	0.060	0.060	0.070	0.054	0.054	0.059	0.061	0.048	0.061	0.054
MJ/MJ DE³	0.086	0.080	0.076	0.080	0.080	0.094	0.073	0.078	0.079	0.084	0.065	0.083	0.075
MJ/MJ NE⁴	0.153	0.151	0.153	0.152	0.155	0.178	0.139	0.145	0.148	0.162	0.118	0.159	0.140

1 Energy corrected milk, 2 Gross energy, 3 Digestible energy, 4 Net energy

Simulation 1: Basal ration, low feeding level
Simulation 2: Basal ration, medium feeding level
Simulation 3: Basal ration, high feeding level
Simulation 4: Basal ration, early lactation (4 weeks post partum)
Simulation 5: Basal ration, late lactation (32 weeks post partum)
Simulation 6: Low proportion of concentrates
Simulation 7: High proportion of concentrates
Simulation 8: Low digestibility of silage
Simulation 9: High digestibility of silage
Simulation 10: Low fat content
Simulation 11: High fat content
Simulation 12: High sugar content
Simulation 13: High starch content