Table 1.
Differences in egg composition between eggs laid by females from control eggs (control cages) and eggs laid by females from eggs injected with testosterone (T cages). (Sample size (n) refers to the number of cage replicates for each experimental group. χ2-values refer to δ deviance of hierarchical linear models. For further details see §2.)
| mean (s.e.; n) | ||||
|---|---|---|---|---|
| variable | control cages | T cages | χ2 | p |
| yolk mass (g) | 10.25 (0.08; 49) | 10.28 (0.11; 56) | 1.39 | 0.24 |
| albumen mass (g) | 10.50 (0.11; 49) | 10.51 (0.13; 56) | 0.11 | 0.74 |
| yolk T concentration (ng g−1) | 5.90 (0.18; 21) | 6.30 (0.18; 22) | 2.70 | 0.10 |
| total yolk T content (ng) | 59.30 (1.70; 21) | 61.19 (1.98; 22) | 0.78 | 0.38 |