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. 2025 Aug 8;12:1611967. doi: 10.3389/fvets.2025.1611967

Figure 2.

Bar chart showing total drinking duration per focal bird over 20 minutes at three time periods during the day: HAF, 1200, and 1430. Two water treatments, ADLIB (blue) and WR (gray), are compared at 16 and 22 weeks of age. WR shows higher durations at HAF and 1430 at 22 weeks. Error bars indicate variability.

The average drinking duration (sec) by focal broiler breeder pullets at three times of day during an on-feed day. Pullets were reared on one of two water provision programs and assessed at 16 and 22 weeks. Bar graphs represent model estimated means ± 95% CI. Letters indicate statistically significant differences identified with a Tukey’s pairwise comparison post hoc test (p < 0.05). Times of day were sampled at 20-min segments at an hour after feeding (HAF), during the water restriction period for water restricted treatments (12:00), and when the water access resumed for restricted treatments for an hour prior to the photoperiod ending (14:30). Water treatments consisted of water restriction for 3 h during the 8 h photoperiod (WR) or ad libitum (ADLIB) access to water during the 8 h photoperiod.