Dam genotype | Sire genotype | Singletons | Twins | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
No. records | Birth wt. mean | Birth wt. mean + 2SD | Birth wt. range | Ges. days | No. records | Birth wt. mean | Birth wt. mean + 2SD | Birth wt. range | Ges. days | ||
Jersey, JerseyX | Jersey, JerseyX | 200 | 26.21 | 16.54–35.88 | 14–45 | 281.15 | 6 | 21.83 | 10.92- 32.74 | 15–30 | 284.66 |
Jersey, JerseyX or dairy | Jersey, JerseyX or dairy | 919 | 32.63 | 20.31–44.95 | 14–51 | 280.34 | 32 | 26.63 | 22.04- 31.22 | 15–34 | 277.87 |
Dairy (excl. Je, JeX)a | Dairy (excl. Je, JeX) | 7960 | 41.84 | 29.61–54.07 | 11 to 76 | 281.62 | 496 | 34.14 | 23.18–45.1 | 18–55 | 277.02 |
Dairy (excl. Je, JeX) | Beefb | 1343 | 42.82 | 30.86–54.78 | 18–63 | 283.6 | 81 | 35.07 | 22.45–47.69 | 21–51 | 278.86 |