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. 2020 Nov 2;100(2):467–473. doi: 10.1016/j.psj.2020.10.031

Table 1.

Treatment groups.

Treatment group Embryonic days (ED) of in ovo GL photostimulation Number of embryos
Dark No photostimulation 252 embryos (divided onto 3 incubation trays)
GD0–20 In ovo GL photostimulation from ED0 to ED20 (day of hatch) 252 embryos (divided onto 3 incubation trays)
GD15–20 In ovo GL photostimulation from ED15 to ED20 252 embryos (divided onto 3 incubation trays)
GD16–20 In ovo GL photostimulation from ED16 to ED20 252 embryos (divided onto 3 incubation trays)
GD18–20 In ovo GL photostimulation from ED18 to ED20 252 embryos (divided onto 3 incubation trays)

Abbreviation: GL, monochromatic green light.