hatchery

A (commercial) facility where eggs, especially those of fish or poultry, are hatched under artificial conditions.

• The codfish hatchery at Wood's Hole, Massachusetts, has been highly successful.
• Meanwhile, in 1909, the trout in a certain Pennsylvania fish hatchery began to suffer from enlarged necks; a condition which so sharply affected the hatchery output that it was thought the industry would have to be abandoned.

A place where something is fostered or nurtured; a nursery.figuratively

• [T]he TVA [Tennessee Valley Authority] is itself a hatchery of public enterprise, as in the disposal of electric power it is required by statute to give preference to States, counties, municipalities, and non-profit co-operative association