Life cycle assessment of organic and conventional egg production: A case study in northern Italy

According to FAO projections, meat and fish production will have to increase by 70% by 2050 to meet the needs of the growing global population and its protein requirements. The poultry sector has been one of the most responsive industries to the growing demand for protein, with a significant increase in egg and chicken meat production. Although eggs are important foods in the human diet, environmental impacts and ethical aspects could also affect dietary choices. This study aimed to assess the environmental impacts of egg production, by using Life Cycle Assessment (LCA). More specifically, the study compared two different farming systems of conventional and organic egg production, with reference to two case studies in northern Italy. The results obtainedgenerally showed the conventional system to be more efficient compared to the organic system. For example, as regards the impact category of Fine particulate matter formation, the conventional system had a 28.6% lower impact than the organic system. Another major difference was in the Land use category, where the conventional system had an impact of 48.5% less than the organic system. The Organic Scenario showed some critical aspects, e.g. the need for a large agricultural area, low feed conversion rates and low crop yields. The two production scenarios showed that in terms of environmental impact, the main difference between organic and conventional egg production resides in feed production. I It is, therefore, essential to work on a low input formula, to substitutethe diet components with the greatest impact and adopt strategies to obtain an increase in yields and/or a reduction in resource consumption during the cultivation phase. The complete substitution of soybean with other local crops could reduce several impacts, including the one linked to transport. The further reduction of maize could also limit the expected impact.