LCA Food 2012 in Saint Malo, France! - Manifestations et colloques ...

PARALLEL SESSION 6C: POULTRY AND PORK PRODUCTION SYSTEMS 8 th Int. Conference on LCA in the
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
Energy demand, non renewable
Global warming potential
Ozone formation (Vegetation)
Ozone formation (Human)
Resources (phosphorus)
Resources (potassium)
Agri-Food Sector, 1-4 Oct 2012
Figure 4. Relative contribution of inputs to environmental impacts of 1 kg of pork (live weight, at farm gate)
for Swiss conventional production.
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
Energy demand, non renewable
Global warming potential
Ozone formation (Vegetation)
Ozone formation (Human)
Resources (phosphorus)
Resources (potassium)
Land competition, arable
Deforestation
Water use (blue water)
Land competition, arable
Deforestation
Water use (blue water)
Eutrophication terr.
Figure 5. Relative contribution of inputs to environmental impacts of 1 kg of chicken meat (live weight, at
farm gate) for Swiss conventional production.
4. Discussion
Generally, the results of this study fitted well into other analyses of meat production. Strid and Röös
(2011) performed a literature review for pig production systems in Europe and found for the most environmental
impact categories similar tendencies. However, most studies are restricted to only a few impact categories
and the different calculation methods, system boundaries and functional units make sound comparisons
often very difficult. This is especially the case for chicken meat production, where apart from live
weight and slaughter weight various other functional units were used for the analyses (e.g. different steps of
processing, cooled or frozen products, whole animals or parts).
The difference in fattening performance was comparatively small in pig production and higher in broiler
production where again slower growing strains and moderate deficiencies in feed rations led to slower
growth rates and less feed efficiency. Similar results were found by Prudêncio da Silva et al., (2010) who
compared label and conventional chicken production in France and by Willams et al., (2006) for chicken
production in the UK.
5. Conclusion
Both for pork and chicken meat, agricultural production dominated the environmental impacts of the
whole meat production chain. Therefore, it is much more relevant how animal production is done than where
it takes place. Apart from various specific measures (e.g. improved manure management), generally the deci-
558
Eutrophication terr.
Eutrophication aq. N
Eutrophication aq. N
Eutrophication aq. P
Acidification
Eutrophication aq. P
Acidification
Ecotox. terr.
Ecotox. terr.
Ecotox aq.
Human tox
Ecotox aq.
Human tox
other inputs
infrastructure
energy carriers
on farm
animal
husbandry
piglet
production
feedstuffs
other inputs
infrastructure
energy carriers
on farm
animal
husbandry
purchase
chicken
feedstuffs