“…The chosen thresholds for enthalpy (≥67 kJ/kg) and THI (≥81) of outer air were suspected of causing severe heat stress and severe discomfort, respectively. The effects of such high values on poultry can be manifold and might result in poorer meat quality [ 8 , 10 ], lower productivity [ 9 , 10 , 19 ], or an increased mortality rate [ 9 , 18 , 19 ]. However, although heat stress might already occur at lower values in turkey flocks, this study aimed to show how more extreme weather situations might impair turkeys’ health and welfare due to an ongoing climate change in future.…”