This chapter, except Section 25128, does not apply to poultry meat which has been inspected and passed for wholesomeness by the United States Department of Agriculture if the immediate container or carcass of the poultry meat bears the official wholesomeness inspection mark of such department at the time of sale. If, however, any cooking, curing, smoking, packing, repacking, cutting up or recutting is done in this state, except in a retail store or public eating house, it shall be done in a poultry plant under federal or state inspection.