Table 3.
Body weight of the hens at the time of photostimulation (PS), 1-week post-PS, the age of first egg (AFE) and the peak in estradiol (E2) in Lohmann, Shaver, and Smoky Joe hens.
| Strain | Body weight (kg) | |||
|---|---|---|---|---|
| at PS1 ± SEM4 | 1-week post-PS ± SEM | at AFE2 ± SEM | at E2 peak3 ± SEM | |
| Lohmann | 1.257 ± 0.013B | 1.336 ± 0.013B | 1.442 ± 0.015 | 1.37 ± 0.018B |
| Shaver | 1.336 ± 0.016A | 1.419 ± 0.018A | 1.496 ± 0.0.059 | 1.458 ± 0.018A |
| Smoky Joe | 1.216 ± 0.009B | 1.242 ± 0.010C | 1.428 ± 0.034 | 1.338 ± 0.017B |
1
PS, photostimulation occurred at 18 woa.
2
AFE, age of first egg.
3
E2 peak: estradiol functional peak.
4
SEM.
A,B,C
LSMeans of the strains within each trait lacking a common superscript are different (p < 0.05).