Except where the context otherwise requires, for the purposes of this subpart the following terms shall be construed, respectively, to mean:

Egg/meat-type game birds. Domesticated fowl such as pheasants, partridge, quail, grouse, and guineas, but not doves and pigeons grown under confinement for the primary purposes of producing eggs and/or meat for human consumption.

Egg/meat-type waterfowl. Domesticated ducks or geese grown under confinement for the primary purposes of producing eggs and/or meat for human consumption.

Meat-type game bird slaughter plant. A meat-type game bird slaughter plant that is federally inspected or under State inspection that the U.S. Department of Agriculture's Food Safety and Inspection Service has recognized as equivalent to Federal inspection.

Meat-type waterfowl slaughter plant. A meat-type waterfowl slaughter plant that is federally inspected or under State inspection that the U.S. Department of Agriculture's Food Safety and Inspection Service has recognized as equivalent to Federal inspection.

Shift. The working period of a group of employees who are on duty at the same time.