Table 3 Performances of egg production in Taiwan
Control line | Selection line | |||||
|---|---|---|---|---|---|---|
Traits | NA*N/NA*N 1 | NA*NA/NA*N | NA*NA/NA*NA | NA*N/NA*N | NA*NA/NA*N | NA*NA/NA*NA |
(Number of birds) | (25) | (36) | (16) | (49) | (59) | (31) |
Body weight at 16 weeks, g | 1360 ± 382,a | 1295 ± 32 ab | 1261 ± 21 b | 1213 ± 23 a | 1213 ± 19 a | 1143 ± 24b |
Age at first egg, day | 157.6 ± 2.6 a | 160.7 ± 2.8 ab | 167.4 ± 3.1 b | 153.4 ± 2.0 | 152.2 ± 1.4 | 157.4 ± 2.6 |
Clutch length, egg | 2.60 ± 0.17 | 2.27 ± 0.11 | 2.09 ± 0.15 | 5.53 ± 0.40 | 6.50 ± 0.52 | 5.46 ± 0.62 |
Clutch length (Trans.) | 6.11 ± 0.35 | 5.30 ± 0.28 | 4.81 ± 0.44 | 9.85 ± 0.39 | 10.34 ± 0.42 | 9.68 ± 0.51 |
Egg number at 44 weeks | 80.8 ± 5.2 | 76.8 ± 4.1 | 76.7 ± 4.9 | 112.4 ± 3.7 | 110.9 ± 4.1 | 107.4 ± 3.5 |
Egg number at 44 weeks (Trans.) | 51.7 ± 4.3 | 48.2 ± 3.4 | 47.5 ± 4.1 | 81.1 ± 3.4 | 80.3 ± 3.7 | 75.5 ± 3.4 |
Laying rate, % | 53.7 ± 3.3 | 52.3 ± 2.6 | 54.4 ± 3.1 | 72.6 ± 2.1 | 71.0 ± 2.5 | 71.4 ± 2.2 |
Adult body weight, g | 1720 ± 42 | 1748 ± 41 | 1677 ± 36 | 1587 ± 28 | 1585 ± 25 | 1551 ± 37 |
Egg weight, g | 48.3 ± 0.5 | 49.5 ± 0.7 | 49.6 ± 0.9 | 46.6 ± 0.4 b | 47.2 ± 0.5 b | 49.3 ± 0.6 a |