Table 5.
Hormonal profile and Newcastle virus vaccine titer (Mean±SE) in broilers exposed to lighting regimens using different lighting colors and durations.
| Light color | Photo-period L: Dhour | GH ng/mL | Insulin µIU/mL | T3 ng/mL | T4 ng/mL | ND Titer mg/dl |
|---|---|---|---|---|---|---|
| Red | 109.8a±0.78 | 20.5a±0.16 | 202.2a±1.46 | 12.2a±0.11 | 212.4c±8.15 | |
| Blue | 19.4b±1.76 | 15.3b±0.30 | 107.5c±3.04 | 5.7c±0.21 | 420.7a±8.10 | |
| White | 18.5c±0.23 | 7.2c±0.18 | 150.7b±2.32 | 7.5b±0.19 | 307.1b±4.35 | |
| p-value | 0.000 | 0.000 | 0.002 | 0.005 | 0.001 | |
| Light’s color X lighting program | ||||||
| Red | ||||||
| C-23:1 | 117.5a±0.72 | 18.7c±0.09 | 189.1c±1.25 | 11.3c±0.13 | 286.1a±3.93 | |
| C-18:6 | 108.5b±0.68 | 20.8b±0.08 | 201.1b±1.33 | 12.2b±0.09 | 228.7b±3.36 | |
| I-16:8 | 103.5c±0.55 | 22.0a±0.09 | 216.2a±1.19 | 13.0a±0.11 | 123.2c±2.98 | |
| Blue | ||||||
| C-23:1 | 40.7a±0.66 | 12.0c±0.12 | 77.6c±0.74 | 3.6c±0.07 | 497.7a±4.04 | |
| C-18:6 | 9.71b±0.11 | 15.8b±0.11 | 103.9b±0.82 | 5.5b±0.08 | 429.5b±3.56 | |
| I-16:8 | 8.0c±0.12 | 18.1a±0.09 | 140.9a±0.77 | 8.1a±0.07 | 334.6c±4.12 | |
| White | ||||||
| C-23:1 | 20.7a±0.17 | 5.4c±0.08 | 126.0c±1.32 | 5.6c±0.09 | 352.1a±2.94 | |
| C-18:6 | 18.6b±0.18 | 7.2b±0.07 | 154.0b±0.99 | 7.4b±0.08 | 301.3b±2.22 | |
| I-16:8 | 16.3c±0.23 | 9.6a±0.08 | 172.1a±1.41 | 9.5a±0.08 | 268.4c±2.54 | |
| p-value | 0.000 | 0.000 | 0.000 | 0.002 | 0.003 | |
Means carrying different superscripts in the same column are significantly different at p≤0.05 or highly significantly different at p<0.01. Means carrying the same superscripts in the same column are non-significantly different at p<0.05. L=Light hours, D=Dark hours, C=Continuous, I=Intermittent, GH=Growth hormone, T3=Tri-iodothyronine, T4=Tetra-iodothyronine, ND=Newcastle, SE=Standard error