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Table 3A.2 Time-series of implied emission factors for enteric fermentation (kg methane per animal per annum)
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| Year | Dairy cattle | Beef cattle | Sheep | Deer | Goats |
|---|---|---|---|---|---|
1990 |
70.2 |
50.8 |
8.9 |
19.7 |
8.9 |
1991 |
70.7 |
51.3 |
9.1 |
19.4 |
8.9 |
1992 |
72.5 |
52.4 |
9.1 |
19.3 |
8.9 |
1993 |
72.9 |
53.8 |
9.3 |
19.2 |
8.9 |
1994 |
73.0 |
53.3 |
9.4 |
19.3 |
8.9 |
1995 |
72.7 |
53.1 |
9.6 |
19.6 |
8.9 |
1996 |
73.4 |
52.4 |
9.7 |
20.0 |
8.9 |
1997 |
73.0 |
54.2 |
10.0 |
20.5 |
8.9 |
1998 |
73.9 |
54.3 |
10.1 |
20.7 |
8.9 |
1999 |
75.1 |
55.2 |
10.1 |
20.8 |
8.9 |
2000 |
77.0 |
54.9 |
10.5 |
20.9 |
8.9 |
2001 |
74.7 |
56.0 |
10.6 |
20.9 |
8.9 |
2002 |
77.4 |
56.3 |
10.8 |
21.4 |
9.0 |
Previous fixed EF |
76.8 |
67.5 |
15.1 |
30.6 |
16.5 |
