ABSTRACT
Birds are endothermic species; they control and maintain body temperature (Tb) within a relatively narrow range, despite moderate to extreme changes in environmental conditions, and controlling Tb is a crucial physiological function in the dynamic steady state of endothermic birds. However, domestic fowls, especially the highly productive agricultural fowls (broilers, turkeys and laying hens), differ to some extent from other endothermic birds in their ability to maintain a sufficiently dynamic steady state despite severe changes in the environment (Yahav, 2014b).
