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The environmental footprint of the egg industry

In recent years, egg production has been in the spotlight for animal welfare issues. While the number of European farms with free-range hens has increased, in Spain, 93 percent of laying hens are still caged. This also contributes to the industry's environmental burden. In the rest of the EU, the figure is much lower (40 percent) due to a growing concern for animal welfare. A team of Spanish scientists has reported the environmental cost of egg production in a typical farm in Spain. The scientists of the University of Oviedo analyzed the effect of intensive egg production on 18 environmental categories, among which are ozone depletion, climate change, terrestrial acidification, human toxicity and land occupation, among others.

"The most affected were the transformation of water and land toxicity," says Amanda Laca, a researcher at the Department of Chemical Engineering and Environmental Technology at the University of Oviedo to Sinc. (phys.org)

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