Table 7.
Average coefficient of variation (%) estimates for pens of broiler breeder pullets reared on one of four feed and water provision treatments in a 2 × 2 factorial design (n = 4 pens/treatment)1.
| Week | Treatment | SEM2 | P-values | |||||
|---|---|---|---|---|---|---|---|---|
| ED + ADLIB | ED + WR | SAD + ADLIB | SAD + WR | Feed | Water | Feed × Water | ||
| 3 | 9.32 | 11.57 | 10.08 | 10.24 | 1.85 | 0.78 | 0.41 | 0.58 |
| 4 | 9.32 | 10.49 | 10.34 | 8.81 | 1.70 | 0.68 | 0.63 | 0.44 |
| 5 | 10.23 | 10.98 | 10.78 | 9.88 | 1.19 | 0.76 | 0.67 | 0.51 |
| 6 | 11.36 | 10.74 | 11.28 | 10.12 | 1.51 | 0.97 | 0.78 | 0.86 |
| 7 | 13.04 | 11.09 | 11.59 | 7.84 | 0.85 | 0.25 | 0.13 | 0.31 |
| 8 | 14.62 | 11.06 | 11.33 | 10.6 | 1.23 | 0.08 | 0.06 | 0.26 |
| 9 | 14.06a | 10.96b | 12.32a | 8.55b | 0.88 | 0.19 | 0.029* | 0.71 |
| 10 | 13.87 | 11.30 | 12.85 | 9.49 | 1.18 | 0.55 | 0.15 | 0.74 |
| 11 | 15.50 | 12.60 | 16.27 | 13.59 | 2.84 | 0.85 | 0.49 | 0.97 |
| 12 | 13.38 | 12.36 | 15.09 | 12.64 | 1.68 | 0.49 | 0.67 | 0.68 |
| 13 | 10.05 | 12.15 | 13.62 | 12.19 | 1.24 | 0.07 | 0.26 | 0.18 |
| 14 | 16.60 | 13.12 | 15.79 | 11.03 | 1.38 | 0.68 | 0.10 | 0.65 |
| 15 | 11.49 | 12.68 | 12.16 | 11.71 | 1.23 | 0.71 | 0.51 | 0.52 |
| 16 | 11.96 | 12.78 | 12.08 | 11.14 | 1.33 | 0.95 | 0.67 | 0.52 |
| 17 | 11.74 | 15.48 | 16.03 | 13.59 | 2.43 | 0.24 | 0.30 | 0.23 |
| 18 | 16.12 | 16.64 | 15.77 | 16.82 | 2.33 | 0.92 | 0.88 | 0.91 |
| 19 | 10.05b | 13.13bc | 14.50a | 9.72c | 1.36 | 0.040* | 0.14 | 0.014* |
| 20 | 10.42 | 11.27 | 12.81 | 10.01 | 2.06 | 0.43 | 0.77 | 0.39 |
| 21 | 10.87 | 12.09 | 10.70 | 10.38 | 1.34 | 0.93 | 0.53 | 0.57 |
| 22 | 11.44 | 11.73 | 10.15 | 11.89 | 1.75 | 0.61 | 0.91 | 0.69 |
1Feeding treatments consisted of skip-a-day (SAD) and every-day (ED) feeding programs, while water provision 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.
2SEM, standard error of the mean.
Superscripts differing within a row indicate statistically significant differences (p < 0.05).
* indicates p < 0.05.