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Metabolic performance and development of chick embryo following thermal manipulation (mean ± SEM): (a) body weight, (b) yolk weight, (c) weight ratio (yolk to body), (d) weight ratio (heart to body), (e) weight ratio (liver to body), and (f) weight ratio (digestive system to body). ∗ and ∗∗ denote statistical significance (two-way ANOVA) with P < 0.05 and P < 0.01, respectively.
