This standard specifies the moxa indicators, test methods, inspection rules and product labeling, packaging, transportation and storage requirements for feed hydrolyzed feather meal. This standard applies to hydrolyzed feather powder (including puffed hydrolyzed gastric hair powder) after the hair stems of feathers and down products that have been depilated from poultry carcasses have been hydrolyzed at a certain temperature, pressure and time. Protein feed.