Table 1 Eggs sampled from multiple flocks of commercial egg farms
Items | No. eggs sampled | No. groups1(50 eggs per group) | % |
Age of flock | 18∼25 | 1,000 | 20 | 12.0 |
26∼35 | 1,850 | 37 | 22.3 |
36∼45 | 2,850 | 57 | 34.3 |
46∼55 | 1,600 | 32 | 19.3 |
56∼65 | 1,000 | 20 | 12.0 |
Breed | Hy-line | 6,400 | 128 | 77.1 |
Lohmann | 1,850 | 37 | 22.3 |
ISA | 50 | 1 | 0.6 |
Packing center1 | GB2 | 750 | 15 | 9.0 |
KR2 | 500 | 10 | 6.0 |
GR2 | 250 | 5 | 3.0 |
KK2 | 750 | 15 | 9.0 |
DM2 | 500 | 10 | 6.0 |
DW3 | 500 | 10 | 6.0 |
DP3 | 750 | 15 | 9.0 |
MH3 | 400 | 8 | 4.8 |
SC2 | 750 | 15 | 9.0 |
EP3 | 450 | 9 | 5.4 |
CW3 | 250 | 5 | 3.0 |
JI3 | 750 | 15 | 9.0 |
TG2 | 500 | 10 | 6.0 |
PR3 | 700 | 14 | 8.4 |
HY3 | 500 | 10 | 6.0 |
Total | 8,300 | 166 | |
1 A total of 50 eggs per layer flock was sampled weekly for five consecutive weeks from 34 layer flocks of 15 commercial egg farms and considered a group per each category.
2 In-line operation.
3 Off-line operation.