Meat Eaters Guide: Methodology - Environmental Working Group
Meat Eaters Guide: Methodology - Environmental Working Group
Meat Eaters Guide: Methodology - Environmental Working Group
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Similar to poultry operations, GHG emissions from egg farm operations come primarily from feed production,<br />
on-farm energy use, nitrous oxide from the poultry litter and fuel combustion. Post-farmgate<br />
emissions account for just 24 percent of total emissions. These are dominated by transport (7 percent),<br />
processing (packaging) (6 percent), cooking and waste disposal (each 5 percent)<br />
7. Farmed Salmon<br />
Figure 7. Eggs: Sources of Greenhouse Gas Emissions<br />
The life cycle analysis model for farmed salmon fillets is based on average emissions from a kilogram<br />
of whole fish from three farmed seafood operations in Norway, Chile and Canada. 64<br />
a. Production and Modeling Details<br />
• Fish feed consists of processed aquaculture feed (produced from fish byproducts and ingredients<br />
such as soybean meal and wheat).<br />
• Other key inputs include electricity, diesel, gasoline and propane for energy.<br />
• Energy is also required for supplying water to the system and treating the wastewater.<br />
• All material inputs are assumed to be transported 1,600 km by truck to the farm.<br />
Table 23. Greenhouse Gas Emissions from Imported Farmed Salmon Production (at farmgate)<br />
Salmon Production System kg of CO e per kg of edible salmon<br />
2<br />
Norway 3.41<br />
Chile 4.83<br />
Canada 4.18<br />
Average CO e emissions per kg of salmon 2 4.14<br />
<strong>Environmental</strong> <strong>Working</strong> <strong>Group</strong> <strong>Meat</strong> <strong>Eaters</strong> <strong>Guide</strong>: <strong>Methodology</strong> 2011 37
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