The present invention provides an easy and efficient method for manufacturing a feed containing a salmon growth hormone with biological activity. The method for manufacturing a feed containing a salmon growth hormone of the present invention includes a step of heating a pulverized salmon head at 30° C. or higher and 90° C. or lower. A feed containing a salmon growth hormone of the present invention is obtained by the above manufacturing method. A liquid containing a salmon growth hormone of the present invention is obtained by heating a pulverized salmon head at 30° C. or higher and 90° C. or lower and separating a solid component from a fluid component of the heated salmon head.
