Effects of Environmental Stressors on Livestock

When ambient temperatures rise beyond an animal's thermal comfort zone, livestock experience heat stress — a cascade of physiological and metabolic disruptions that reduce feed intake, impair reproduction, and cut milk yields in dairy cattle by measurable margins. Researchers working on environmental stressors in livestock are trying to understand how animals sense and respond to thermal load at the cellular and hormonal level, how those responses differ across breeds, and which genetic variants confer meaningful resilience. A pressing open question is how production systems can be redesigned — through selective breeding, nutritional intervention, or housing modifications — to sustain output as climate change pushes heat stress events into regions and seasons where they were previously rare. Connecting fine-scale physiological data to herd-level productivity and long-run welfare outcomes remains an active methodological challenge across the discipline.

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Keywords

Heat StressLivestock ProductionDairy CattleClimate ChangePhysiological ResponsesMetabolic Adaptations