Table 1.
Demographic summary for animals with weaning (WFEC) and postweaning (PWFEC) fecal egg counts
| Item | Variable | |||||
|---|---|---|---|---|---|---|
| WFEC | PWFEC | |||||
| Number of lambs | Number of lambs | |||||
| Number | Mean | Median | Number | Mean | Median | |
| Number of records | 2,537 | – | – | 3,421 | – | – |
| Number of flocks | 12 | 211.5 | 159.5 | 12 | 285.1 | 219.5 |
| Number of management groups | 122 | 20.8 | 17.0 | 166 | 20.6 | 16.0 |
| Number of sires | 144 | 17.4 | 13.0 | 187 | 18.0 | 11.0 |
| Number of sires used in >1 flocka | 10 | – | – | 17 | – | – |
| Number of dams | 1,103 | 2.29 | 2.0 | 1,429 | 2.39 | 2.0 |
| Number of litters | 1,626 | 1.55 | 1.0 | 2,281 | 1.49 | 1.0 |
| Number (%) of dams with recordsb | 209 | – | – | 439 | – | – |
| Number (%) of sires with recordsc | 35 | – | – | 53 | – | – |
aSix, 3, and 1 sires had progeny in 2, 3, and 4 flocks, respectively.
bFor WFEC, these 209 dams represented 18.9% of all dams and produced 25.7% of measured lambs. For PWFEC, these 439 dams represented 30.7% of all dams and produced 32.0% of measured lambs.
cFor WFEC, these 35 sires represented 24.3% of all sires and produced 24.8% of measured lambs. For PWFEC, these 53 sires represented 28.3% of all sires and produced 28.4% of measured lambs.