Figure 1
Relative yolk-free embryo or chick weight (g/g of egg weight at setting) for experiment 1 (a) and experiment 2 (b). Incubation temperature was decreased (low: 34.6°C) or increased (high: 40.6°C) from ED 16 to ED 18.5. Eggs in the control group were incubated at 37.6°C throughout incubation. Different letters (a, b) indicate a significant difference between treatment groups at that time point (P < 0.05); n = 12. Data are shown as mean ± SEM. ED = embryonic day; IP = internal pipping; EP = external pipping.