Table 2 The 24 female fertility traits analysed
Trait group | Trait sub-group | Trait | Description |
|---|---|---|---|
Fertility traits | Fertility | Non-return rate heifer (nrr) | Heifers non-return rate after 56Â days, binary |
Non-return rate cow (nrk) | Cows non-return rate after 56Â days, binary | ||
Interval first to last insemination heifer (vzr) | Interval between first and last insemination for heifer, days | ||
Interval first to last insemination cow (vzk) | Interval between first and last insemination for cows, days | ||
Interval calving to insemination (raz) | Interval from calving to first service, days | ||
Birth traits | Birth history direct | Percentage normal births (ngd) | Calving ease, scored between 1-without help to 5-dystocia |
Percentage live births (lgd) | Percentage of calves born alive | ||
Birth weight (ggd) | Weight of calve at birth, kg | ||
Gestation length (tdd) | Days from successful insemination to birth | ||
Multiple birth (twind) | Percentage of multiple births | ||
Birth history maternal | Percentage normal births (ngm) | Calving ease, scored between 1-without help to 5-dystocia | |
Percentage live births (lgm) | Percentage of calves born alive | ||
Birth weight (ggm) | Weight of calve at birth, kg | ||
Gestation length (tdm) | Days from successful insemination to birth | ||
Multiple birth (twinm) | Percentage of multiple births | ||
Growth-related traits | Rearing success | Survival period 1 (p1) | Survival from day 3 up to day 30 |
Survival heifer period 2 (hp2) | Survival of heifers from day 31 up to 458Â days | ||
Survival bull period 2 (bp2) | Survival of young bulls from 31Â days up to 183Â days | ||
Slaughter traits calves | Slaughter weight (cwco) | Weight at slaughter, kg | |
Carcass conformation score (ccco) | Amount of meat at slaughter, kg | ||
Carcass fat score (cfco) | Fat cover in the meat | ||
Slaughter traits adults | Slaughter weight (cwao) | Weight at slaughter, kg | |
Carcass conformation score (ccao) | Amount of meat at slaughter, kg | ||
Carcass fat score (cfao) | Fat cover in the meat |