Rethinking methane from animal agriculture

Liu, Shule; Proudman, Joe; Mitloehner, Frank M.

doi:10.1186/s43170-021-00041-y

CABI Agriculture and Bioscience

Table 3 Emission factors used for calculating methane emission from California dairy cows

From: Rethinking methane from animal agriculture

Year	E.F.^a kg/hd	Manure management
Year	E.F.^a kg/hd	A.D	A.L	D.S	D.P	L.S	Pasture	Solid
Before 2000
The emission factors for year 2000 were used to estimate the CH₄ emissions before year 2000
2000
E.R.^b	135.73	54.26	293.58	2.05	125.26	125.26	6.14	16.36
Prop. (%)		0.05	57.70	10.90	0.23	20.90	1.02	9.17
2001
E.R	130.53	16.81	301.24	2.03	133.44	133.24	6.09	16.24
Prop. (%)		0.37	57.90	10.80	0.23	20.50	0.97	9.20
2002
E.R	136.02	13.58	300.52	2.05	128.8	128.8	6.15	16.41
Prop. (%)		0.83	58.00	10.80	0.23	20.00	0.93	9.24
2003
E.R	133.95	32.49	303.27	2.03	133.23	133.23	6.1	16.28
Prop. (%)		1.26	58.00	10.80	0.20	19.70	0.87	9.21
2004
E.R	130.86	28.56	286.04	1.98	123.35	123.35	5.93	15.8
Prop. (%)		1.45	58.00	10.70	0.18	19.60	0.82	9.19
2005
E.R	131.01	47.47	293.37	1.99	122.27	122.27	5.97	15.92
Prop. (%)		2.51	57.50	10.70	0.15	19.20	0.77	9.16
2006
E.R	131.8	69.71	293	2.01	127.56	127.56	6.04	16.1
Prop. (%)		1.20	57.90	10.60	0.13	20.30	0.72	9.13
2007
E.R	143.18	73.3	320.2	2.2	139.06	139.06	6.6	17.6
Prop. (%)		3.34	56.60	10.60	0.10	19.60	0.67	9.10
2008
E.R	139.84	79.74	325.3	2.18	141.85	141.85	6.55	17.47
Prop. (%)		2.30	57.50	10.60	0.10	19.70	0.67	9.10
2009
E.R	135.37	75.23	319.09	2.16	136.9	136.9	6.49	17.31
Prop. (%)		1.14	58.20	10.60	0.10	20.20	0.67	9.10
2010
E.R	146.12	77.35	324.44	2.22	129.35	129.35	6.67	17.8
Prop. (%)		1.19	58.20	10.60	0.10	20.20	0.67	9.10
2011
E.R	146.63	81.49	327.97	2.25	131.69	131.69	6.75	17.99
Prop. (%)		1.19	58.20	10.60	0.10	20.20	0.67	9.10
2012
E.R	144.61	81.54	338.5	2.25	146.09	146.09	6.75	18
Prop. (%)		1.19	58.20	10.60	0.10	20.20	0.67	9.10
2013
E.R	144.61	80.93	326.71	2.23	144.46	144.46	6.70	17.87
Prop. (%)		1.19	58.20	10.60	0.10	20.20	0.67	9.10
2014
E.R	144.61	82.24	331.98	2.27	146.79	146.79	6.81	18.16
Prop. (%)		1.19	58.20	10.60	0.10	20.20	0.67	9.10
2015
E.R	144.61	82.24	331.98	2.27	146.79	146.79	6.81	18.16
Prop. (%)		1.19	58.20	10.60	0.10	20.20	0.67	9.10
2016
E.R	144.61	82.24	331.98	2.27	146.79	146.79	6.81	18.16
Prop. (%)		1.19	58.20	10.60	0.10	20.20	0.67	9.10
2017
E.R	144.61	82.24	331.98	2.27	146.79	146.79	6.81	18.16
Prop. (%)		1.19	58.20	10.60	0.10	20.20	0.67	9.10

^aE.F., A.D., A.L., D.S., D.P., and L.S. indicate enteric fermentation, anaerobic digestion, anaerobic lagoon, daily spread, deep pit, and liquid slurry, respectively
^bE.R., emission rate of methane (kg/hd); prop. (%), proportion in manure management system

Back to article page

ISSN: 2662-4044

Contact us

Submission enquiries: Access here and click Contact Us
General enquiries: info@biomedcentral.com