Nipple watering systems for broilers have become very popular in recent years. This is mainly because these systems save labor by eliminating the chore of cleaning waterers. Although labor is greatly reduced with nipple watering systems, this does not mean that they require less management. In fact, nipple waterers demand more time, knowledge and effort to operate properly than do open systems. Problems caused by insufficient or improper management of nipple watering systems can have a serious impact on broiler performance.
"PB1533-Nipple Watering Systems for Broilers," The University of Tennessee Agricultural Extension Service, PB1533-2M-12/94 E12-2015-00-151-95, http://trace.tennessee.edu/utk_agexani/37