The market regulates Danish chicken production and all processes related to the production in agriculture are influenced by the market demand. Chicken are produced at various types of farms all over the country, but some farms react more than others .....
The main processes influenced by a demand for pork are shown in the figure below.
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Market based product chain diagram for pork production covering the most important processes in terms of contribution to global warming. Boxes refer to production processes. Names of grey boxes refer to the main product of the processes. Red arrows represent material or energy transfer between two processes; green arrows represent saved material or energy transfer as a result of displacements; green lines represent displacements and red lines represent avoided displacemements. Further details can be found in the LCA model.
Bread wheat, rapeseed and a number of other crops are produced at Farm type 20. Environmental exchanges associated with theses crops have been eliminated by system expansion.
Feed is produced from soy meal and a number of other ingredients. Soy oil is co-produced with soy meal, which displaces rapeseed oil. Rapeseed meal is co-produced with rapeseed oil, explaining the "loop" of displacements.
The table below shows the potential environmental impacts associated with a demand for one kg living chicken ex farm.
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Impact category |
Unit |
Conventional |
Organic |
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Global warming |
g CO2-eq. | 1860 |
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Acidification |
g SO2-eq. | 34.2 |
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| Nutrient enrichment | g NO3-eq. | 149 |
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| Smog formation | g ethene eq. | 0.335 |
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| Land use | m2 year | 3.6 |
References:
Andersen M and Jensen JD: Marginale producenter af udvalgte basislevnedsmidler (in Danish) Udkast d. 5. februar 2003.