Table 1.
Female reproductive performance (mean ± SE) per clutch and per treatment with mass variables expressed in grams and hormone values in pg/mg.
| first clutch | second clutch | fourth clutch | fifth clutch | treatment | clutch | Treatment × clutch | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Treatment | control | control | Treatment | treatment | control | Control | treatment | F | P | F | P | F | P | |
| hens body mass | 874.6 (15.8) | 872.3 (19.6) | 878.4 (16.9) | 873.7 (17.5) | 855.0 (34.5) | 840.8 (27.0) | 806.2 (17.9) | 789.2 (17.7) | 0.004 | 0.985 | 2.108 | 0.105 | 0.142 | 0.935 |
| clutch mass | 222.6 (21.3) | 188.4 (28.0) | 300.0 (37.5) | 259.0 (38.6) | 218.3 (20.8) | 220.9 (23.5) | 199.3 (11.4) | 246.1 (17.4) | 0.017 | 0.898 | 1.967 | 0.473 | 0.290 | 0.832 |
| egg mass | 34.9 (0.56) | 33.1 (0.54) | 35.4 (0.53) | 33.8 (0.60) | 38.3 (0.43) | 36.5 (0.77) | 35.7 (0.43) | 37.6 (0.37) | 5.970 | 0.016 | 17.081 | <0.001 | 5.338 | 0.002 |
| clutch size | 5.9 (0.73) | 5.8 (0.89) | 8.2 (1.06) | 7.5 (1.05) | 5.6 (0.51) | 6.1 (0.65) | 5.3 (0.47) | 6.6 (0.49) | 0.198 | 0.657 | 1.331 | 0.390 | 0.871 | 0.459 |
| yolk mass | 13.2 (0.13) | 12.7 (0.30) | 11.9 (0.25) | 12.4 (0.10) | 4.644 | 0.037 | 12.976 | 0,008 | 0.016 | 0.901 | ||||
| shell mass | 4.2 (0.06) | 3.9 (0.08) | 4.1 (0.05) | 4.3 (0.04) | 10.168 | 0.004 | 1.953 | 0.169 | 0.145 | 0.705 | ||||
| albumin mass | 20.9 (0.33) | 19.7 (0.50) | 19.6 (0.22) | 20.8 (0.33) | 11.001 | 0.002 | 0.070 | 0.792 | 0.009 | 0.921 | ||||
| T concentration | 4.9 (0.16) | 4.9 (0.21) | 5.2 (0.26) | 5.1 (0.16) | 0.051 | 0.822 | 1.448 | 0.235 | 0.006 | 0.937 | ||||
| A4 concentration | 75.9 (2.9) | 80.8 (9.4) | 79.3 (4.5) | 75.9 (4.9) | 0.477 | 0.494 | 0.017 | 0.898 | 0.017 | 0.898 | ||||