Systemic acyl-ghrelin increases tail skin temperature in rats without affecting their thermoregulatory behavior in a cold environment

•The effect of acyl-ghrelin administration on thermoregulatory behavior in rats in a cold environment was examined.•The acyl-ghrelin administration did not affect thermoregulatory behavior in a cold environment.•However, the acyl-ghrelin administration increased tail skin temperature in a cold environment.