EDUCATION: GLOBAL METHANE INVENTORY
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Appendix I: Default Values for Calculating Methane Emissions from Animals
Find the number of each animal from the FAO database for each country you selected. FAO will report this in 1000 head. The FAO database also has a list of developed and developing countries for each geographical region.
Multiply the number of animals (1000 head) by the emission factor for that animal from the charts below. This will give the methane emissions in kilograms per year. Multiply this number by 106 to yield the emission in teragrams (Tg).
| Methane Calculation |
| Methane Emissions (Tg/yr) |
= |
Number of Animals (1000 head) |
× |
Methane Emission Factor (kg CH4/head/yr) |
× |
106 (to convert to Tg) |
| Emission Factors |
| Enteric Fermentation Emission Factors (kg CH4 Per Head Per Year) |
| |
Developed Countries |
Developing Countries |
| Buffalo |
55 |
55 |
| Sheep |
8 |
5 |
| Goats |
5 |
5 |
| Camels |
46 |
46 |
| Horses |
18 |
18 |
| Mules and Asses |
10 |
10 |
| Swine |
1.5 |
1 |
| Poultry |
N/A |
N/A |
|
| Enteric Fermentation Emission Factors For Cattle (kg CH4 Per Head Per Year) |
| Regions |
Dairy |
Non Dairy |
| North America |
118 |
47 |
| Western Europe |
100 |
48 |
| Eastern Europe |
81 |
56 |
| Oceania |
68 |
53 |
| Latin America |
57 |
49 |
| Asia |
56 |
44 |
| Africa and Middle East |
36 |
32 |
| Indian Subcontinent |
46 |
25 |
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