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Mass Death of Livestock After Introduction of “Eco-Friendly” Feed Bovaer Raises Concern Among Farmers

Denmark has reported a growing number of incidents involving the death of cattle following the introduction of the Bovaer feed additive program, developed with the participation of the Bill Gates Foundation and approved by the Danish government.
ALTN.News
Nov 5, 2025 - 13:27
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The additive is designed to reduce methane emissions from cows — a key greenhouse gas that, according to the UN, accounts for up to 14% of global livestock-related emissions. However, farmers report a sharp rise in animal deaths that began shortly after the additive was made mandatory.

Local media and agricultural associations have documented the mass removal of dead cattle from farms. The exact cause of death has not yet been determined, but several farmers link it directly to the new feed. Danish authorities have announced that a veterinary investigation and laboratory testing are underway, and the use of Bovaer has been temporarily suspended at several sites.

The developer DSM and representatives of the Gates Foundation deny any link between the product and livestock deaths, claiming that during trials Bovaer reduced methane emissions by 30% without harming animal health. However, experts note that laboratory results do not always reflect long-term industrial effects.

Farmer unions are demanding transparency in research and independent oversight of the additive’s composition. If toxicity is confirmed, Denmark may reconsider its participation in EU climate programs related to methane reduction in agriculture.