Heat stress is a significant and underrecognized welfare problem for sheep in warm and subtropical climates. Providing shade is one of the most effective and affordable interventions available.
Shade is a simple, cheap welfare intervention that dramatically reduces heat stress in sheep - yet millions of sheep worldwide graze without access to shade during hot periods. This is partly historical: traditional extensive sheep grazing in temperate climates rarely required shade infrastructure. As farming expands into warmer regions and climate change shifts conditions, this assumption is becoming increasingly invalid. The welfare cost of heat stress is not just discomfort - it includes impaired reproduction, reduced immunity, compromised lamb welfare, and in extreme cases, mortality. Farmers operating in warm climates should treat shade as fundamental infrastructure, not an optional extra, and welfare standards should reflect this.