Trait definitions

Carcase trait definitions

The accuracy threshold for publication of carcase trait EBVs is 30%.

EBV (units)Data sourceInterpretationNotes
Days to slaughter (days)Birth and kill dates from BCMS and processorsNegative values = Progeny quicker to slaughterSelection for lower days to slaughter will result in animals that will finish quicker at a constant weight and fat class
Carcase weight (kg)Cold carcase weights from processors.Positive values = Heavier carcasesSelection for higher carcase weights will result in animals that produce heavier carcases at a constant slaughter age
Carcase conformation (45 point scale)EUROP conformation scores from processors, converted to a 45 point scale.
A grade spans 9 points.
Positive values = Higher carcase conformationSelecting for higher carcase conformation will increase the yield of lean meat in the carcase
Carcase fat class (45 point scale)EUROP fat class scores from processors, converted to a 45 point scale.
A grade spans 9 points.
Positive values = fatter carcases Selecting for higher fat class values will increase the level of fat cover on the carcase
Average daily carcase gain (kg/day)Positive values = higher carcase growth ratesPositive values = higher carcase growth ratesSelecting for positive ADCG will produce animals that gain carcase weight more quickly

Maternal trait definitions

The accuracy threshold for publication of maternal trait EBVs is 25%.

EBV (units)Data sourceInterpretationNotes
Age at first calving (days)Birth and calving dates from BCMSNegative values = Puberty reached at an earlier ageSelecting for lower age at first calving will result in animals that are more likely to hold service at a younger age
Productive lifespan (parities)Birth, calving and death dates from BCMSPositive values = Longer breeding lifeThe number of calvings in the first 6.5 years of live, or until death, whichever comes first.
Selecting for higher productive lifespan should produce animals that can be kept in the breeding herd for longer
Calf survival (%)Birth and death dates from BCMSPositive values = higher survival ratesThe calf survival EBV is based on the alive or dead status of tagged calves at 10 months of age. Selecting on positive values will result in calves more likely to survive between tagging and 10 months of age