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During heat stress, ruminants like other homeothermic animals, use pathways to increase heat loss and reduce heat production to maintain euthermia (Bernabucci et al., 2010). Environmentally induced hyperthermia decreases efficiency and production (O’Brien et al., 2010). One of the first noticeable signs of heat stress (HS) during production is reduced nutrient intake, which is presumably an evolutionary strategy to reduce the ‘heat increment’ of feeding (O’Brien et al., 2010). The aim of this study was to evaluate the effect of different air temperatures on diurnal, nocturnal, and daily feed intake as well as water intake, heart rate, respiratory rate and body temperature. |
