Rising global temperatures pose growing welfare challenges for dairy cattle
In short: A review of dairy cattle welfare found that increasing global temperatures are expanding the impact of heat stress into northern latitudes. As heat-related days rise in regions like North America and Europe, cows face significant biological and behavioral challenges, including reduced milk production, impaired reproductive performance, and physical discomfort.
The review highlights that heat stress is no longer just a tropical issue but a major industrial challenge due to intensified production and warming climates. It notes that while physical health is impacted, heat stress may also compromise a cow's affective state by inducing feelings of hunger and thirst.
The authors identified significant research gaps, particularly regarding how cows manage evolutionary thermoregulation and natural coping behaviors in modern systems. The review was based on existing literature and did not involve new primary data collection.
Why it matters: As the planet warms, understanding the complex biological and behavioral impacts of heat on livestock is crucial for sustainable farming.
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Sources
- Summary by Intellect · source: Research: Polsky and Keyserlingk (2017). Invited review: Effects of heat stress on dairy cattle welfare. Journal of Dairy Science.
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