Cow Health Crisis in Denmark Linked to Methane-Reducing Feed Additive

Danish farmers report cows collapsing and reduced milk after using Bovaer, a methane-reducing feed additive. Investigations launched amid safety concerns.

Jan 8, 2026 - 04:04
Jan 8, 2026 - 10:37
Cow Health Crisis in Denmark Linked to Methane-Reducing Feed Additive

Cow Health Crisis in Denmark Linked to Methane-Reducing Feed Additive

Danish dairy farmers are sounding the alarm after an unprecedented rise in cow collapses and declining milk yields following the introduction of a new feed additive, Bovaer, designed to reduce methane emissions from cattle. The emerging situation has triggered mounting calls for urgent investigation and regulatory review.

Background: The Methane Challenge and Bovaer's Introduction

Methane emissions from livestock, notably cattle, are widely recognized as significant contributors to greenhouse gases and climate change. In response, feed additives have been developed to curb these emissions during digestion.

Bovaer, manufactured by Dutch company DSM, was approved by the European Commission in 2022 as a feed additive to reduce methane output in cows.

The introduction of Bovaer into Danish dairy farms was seen as an innovative climate action step aligned with EU environmental policies.

Emerging Concerns from Farmers

However, since Bovaer's rollout, a concerning pattern has surfaced among farmers:

  • Reports of cows collapsing suddenly on farms.
  • Significant reductions in milk production.
  • In extreme cases, euthanasia of severely affected animals.

According to statements to Jyllands-Posten, numerous farmers believe Bovaer may be the underlying cause of these health issues.
Kjartan Poulsen, chairman of the National Association of Danish Dairy Producers, confirmed a surge in complaints saying, “We have so many people who call us and are unhappy about what is happening in their herds.”

Jyllands-Posten report

Health and Safety Debate

While the European Food Safety Authority (EFSA) has deemed Bovaer safe for cattle and consumers, skepticism persists in the farming community. Some farmers have independently removed the additive and reported recovery in their herds.

Additional claims circulating, including from TV2 Nyheder and controversial outlets such as InfoWars, allege potential contamination impacts and link the additive to cancer risks, though these claims remain unsubstantiated by scientific consensus.

Regulatory and Investigative Response

The National Association of Danish Dairy Producers has initiated an inquiry, aiming to gather systematic evidence and coordinate responses with farmers nationwide.

Chairman Poulsen advocates for a "timeout" on Bovaer usage pending scientific review: “We will have farmers sign declarations to cease use if cattle become ill as per animal welfare regulations.”

The Danish Veterinary and Food Administration acknowledged awareness of farmers’ concerns. It has commissioned Aarhus University's researchers to undertake an independent investigation.

Contextualizing the Climate vs. Livestock Health Debate

Livestock methane emissions are globally recognized as a substantial greenhouse gas source, prompting widespread environmental policies focused on reduction. However, the Danish case illustrates the complexity of balancing climate initiatives with agricultural productivity and animal welfare.

Scientific rigor and transparency in evaluating new technologies like Bovaer are crucial to maintaining confidence among stakeholders and ensuring sustainable farming practices.

Conclusion

The unfolding reports of cow health issues in Denmark following Bovaer’s introduction underscore the necessity for thorough, impartial scientific investigation. While methane reduction is an urgent environmental priority, unintended consequences on animal health must be transparently assessed to safeguard farmers’ livelihoods and consumers’ trust.

The dialogue between regulators, scientists, and the farming community remains critical as investigations proceed.