Hatchery

A hatchery is a facility where a species' young are hatched from eggs.

The Jem'Hadar are bred in hatcheries by the Dominion. 

In 2374, Starfleet Taskforce 59 attempted to destroy a Jem'Hadar hatchery located in a star system close to the Kalandra sector, but were forced to retreat after encountering stronger then expected Dominion forces in the system. (: "Change in Command")