Table 2.
Egg production by hIFN-β KI G1, G2, and G3 hens and by WT (G1) hens.
| Chickens | Bird no. | Parental rooster | Age at first egg (day) | First 150 days egg production (no.) | Egg production rate (day–1) | Duration of life span (days) |
|---|---|---|---|---|---|---|
| Knock-in G1 | #640 | #411 | 146 | 58 | 38.7 | 615 |
| (BPR × WL) | #714 | #411 | 131 | 121 | 80.7 | 993 |
| #766 | #411 | 136 | 21 | 14.0 | 979 | |
| #773 | #411 | 129 | 96 | 64.0 | 775 | |
| #779 | #411 | 138 | 103 | 68.7 | 950 | |
| #813 | #412 | 159 | 53 | 35.3 | 535 | |
| Average value | 139.8 ± 10.2 | 75.0 ± 34.8* | 50.0 ± 23.2* | 807.8 ± 181.0 | ||
| Control G1 | #C1 | 105 | 115 | 76.7 | 985 | |
| (BPR × WL) | #C2 | 129 | 110 | 73.3 | 818 | |
| #C3 | 129 | 117 | 78.0 | 945 | ||
| #C4 | 129 | 114 | 76.0 | 818 | ||
| Average value | 123 ± 10.4 | 114.0 ± 2.5 | 76.0 ± 1.7 | 891.5 ± 74.8 | ||
| Knock-in G2 | #3058 | #613 (G0:#411) | 146 | 38 | 25.3 | |
| #3059 | #613 (G0:#411) | 146 | 79 | 52.7 | ||
| #3063 | #731 (G0:#412) | 150 | 67 | 44.7 | ||
| #3602 | #534 (G0:#412) | 138 | 23 | 15.3 | ||
| #3607 | #731 (G0:#412) | 132 | 133 | 88.7 | ||
| #3610 | #731 (G0:#412) | 127 | 11 | 7.3 | ||
| #3614 | #767 (G0:#411) | 127 | 107 | 71.3 | ||
| #3619 | #782 (G0:#411) | 159 | 63 | 42.0 | ||
| Average value | 140.6 ± 10.8 | 65.1 ± 38.7 | 43.4 ± 25.8 | |||
| Knock-in G3 | #3758 | #3604(G0:#412) | 142 | 147 | 98.0 | |
| #3781 | #3604(G0:#412) | 132 | 44 | 29.3 | ||
| #3784 | #3604(G0:#412) | 132 | 52 | 34.7 | ||
| Average value | 135.3 ± 4.7 | 81.0 ± 46.8 | 54.0 ± 31.2 |
*Significantly different compared with control, as calculated by a Weltch’s t-test (P < 0.05).