Table 1.
Descriptive statistics of number of piglets born alive and total number of piglets born in 4 Yorkshire populations
| Trait | Population1) | Source | N | Min | Max | Mean | SD |
|---|---|---|---|---|---|---|---|
| NBA | LM | American line2) | 931 | 5.46 | 12.78 | 9.30 | 2.112 |
| FJ | 545 | 6.60 | 14.38 | 10.70 | 2.295 | ||
| XD | British line | 874 | 7.54 | 12.28 | 10.38 | 1.733 | |
| ZX | American line3) | 771 | 7.18 | 13.19 | 9.74 | 1.914 | |
| TNB | LM | American line2) | 931 | 6.15 | 14.38 | 10.03 | 2.226 |
| FJ | 545 | 6.89 | 16.75 | 11.73 | 2.489 | ||
| XD | British line | 874 | 8.06 | 13.59 | 10.88 | 1.810 | |
| ZX | American line3) | 771 | 7.62 | 15.00 | 11.04 | 2.155 |
NBA, number of piglets born alive; TNB, total number of piglets born; SD, standard deviation.
1)
LM, FJ, XD, and ZX are Yorkshire populations from 4 elite Chinese pig breeding farms.
2),3)
Animals from LM, FJ, and ZX are descendants of American Yorkshires but ZX was came from another breeding company.