retail dealers with respect to poultry products sold directly to consumers in individual retail stores, if the only processing operation performed by such retail dealers is the cutting up of poultry products on the premises where such sales to consumers are made;

for such period of time as the Secretary determines that it would be impracticable to provide inspection and the exemption will aid in the effective administration of this chapter, any person engaged in the processing of poultry or poultry products for commerce and the poultry or poultry products processed by such person: Provided, however, That no such exemption shall continue in effect on and after January 1, 1970; and

persons slaughtering, processing, or otherwise handling poultry or poultry products which have been or are to be processed as required by recognized religious dietary laws, to the extent that the Secretary determines necessary to avoid conflict with such requirements while still effectuating the purposes of this chapter.