Abstract
Abstract Livestock farming is considered one relevant cause of global warming. The aim of this article is to show that the environmental footprint of broilers and laying hens is small among farmed animal species. Author examines the increase in the production of broilers and laying hens over the past decades as a result of genetic selection, and as a consequence their greenhouse gas emissions, land, water and energy use have decreased. It was evidenced that with the increase of production the environmental footprint per unit of product decreases. On the other hand, in alternative housing systems, especially in free-range and organic production, all indicators deteriorate. Supplying the Earth’s ever-growing population with a sufficient amount of high-quality food of animal origin, in such a way that the environmental footprint of poultry farming is reduced, can be achieved with intensive production taking into account animal welfare. New tools and methods such as genomic selection, gene editing or precision poultry breeding will help in this.
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