lenium) and feeding programs during the production period on broiler breeder fertility and hatchability

were: Choretime, Lubing, Plasson, Val, and Ziggety. Higher average maximum temperatures for the SU (32 C) versus the SP (28 C) trial, made the trials significantly different (SD) and therefore were analyzed separately. While no SD were found in BW (kg) during the SP trial, drinker D significantly reduced 42d BW (2.32) in comparison to the A (2.44), B (2.42), C (2.41), and E (2.44) systems. No SD in overall FC or percent mortality were found between treatments for either the SP or SU trial. During the SP and SU trials, no SD in twenty-four hour FI was found between drinker systems for weeks 1, 3 and 4. During week 2 for the SP trial, nipple system B and D had less FI than nipple system A. During week 5 for the SU trial, nipple system D had less FI than A, B, and E. Twenty-hour WU was less for birds on system D for weeks 2, 3, and 4 in both SP and SU trials, and also in week 5 for the SU trial, than for birds on system A, B, C, and E. Broiler growth and performance was not related to measured flow rate of the drinkers for SP and SU trials.