As the world's population continues to surge, a stark reality is emerging: the unrelenting growth in global livestock farming has catastrophic implications for our planet's health. A new report from Stop Financing Factory Farming reveals that farmed mammals and poultry have increased by 50% since 2006, placing unsustainable pressure on natural environments, decimating wildlife, and exacerbating the climate crisis. The findings are a stark update of the UN FAO's influential 2006 report, 'Livestock's Long Shadow', highlighting a disturbing trajectory for most environmental trends.
The expansion of cropland dedicated to feeding livestock has risen by around a quarter over the past two decades, with dire consequences. Soil fertility is already in decline globally, and an area equivalent to Canada now suffers from degradation. Furthermore, approximately 90% of water extracted from natural systems for irrigation is used to cultivate animal feed, putting intense strain on already dwindling water resources.
Peter Stevenson, chief policy adviser at Compassion in World Farming, cautioned that while some progress has been made in reducing greenhouse gas emissions per unit of meat, these gains are frequently offset by the sheer increase in livestock numbers. According to the FAO, emissions from livestock rose by more than a fifth between 2001 and 2023. The total number of farmed animals (those slaughtered or used for milk or eggs) reached 94.9 billion in 2023, up from 61.8 billion in 2006.
The intensive nature of this farming has devastating environmental consequences. Increasing quantities of fertiliser are being used for animal feed production, and the disposal of slurry is contributing to the creation of 'dead zones' in marine environments. The largest such zone, in the Gulf of Mexico, is an area the size of Connecticut where marine life is being eradicated, illustrating the severe impact on aquatic ecosystems.
Merel van der Mark, head of animal welfare and finance at Sinergia Animal, underscored the necessity of a widespread dietary shift away from meat-heavy consumption patterns to reverse the trend of increasing planetary damage. She urged publicly funded development banks, which provided $1.23 billion (approximately £930 million) to intensive farms in 2024, to lead by example. This would involve altering their investment criteria to move away from industrial livestock production and instead aligning financial flows with more sustainable practices.
The report's findings, while not peer-reviewed, build upon the foundational work of the UN FAO, providing an updated perspective on the environmental footprint of global livestock farming. It highlights a pressing need for policy-makers, investors, and consumers to take action and adopt more sustainable agricultural practices.