How healthier farm animals can cut greenhouse gas emissions

Healthier farm animals could help cut climate emissions—in theory. Per The Conversation, researchers at Edinburgh Napier University examined livestock systems worldwide and found that preventing disease improves milk production and survival, shrinking each kilogram's carbon footprint. The reasoning is straightforward: when cattle miscarry or calves die, farmers waste feed, water, and land without producing any food. Their research in Kenya found that halving calf mortality reduced methane emissions per kilogram of beef by three point two percent. But here's the catch: as the herd grew healthier, it produced more beef—and more total methane. The Conversation reports that a new research initiative called Halow will measure whether improving animal health actually reduces total greenhouse gas emissions or just makes each unit more efficient. The broader takeaway: wealthier countries should reduce meat consumption, while poorer nations need to improve food access and animal health without letting their emissions spiral.

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