There are two components that determine whether selection index values will be published on an animal within the TransTasman Angus Cattle Evaluation.
Selection index values will be calculated for an animal if:
Animals that meet the above criteria will have selection indexes calculated, but whether the selection index value is published is dependent on whether the selection index meets the required reportability criteria.
Reportability relates to a series of minimum criteria that must be me before the selection indexes will be published. Specifically, animals must have a least one EBV in four different “trait blocks” that has an accuracy greater than or equal to a threshold value.
The threshold values used within the TransTasman Angus Cattle Evaluation are displayed in Table 1.
The reportability criteria are in place to ensure the integrity of the selection indexes that are published.
The reportability criteria ensure that selection index values are only available if a sufficient amount of information has been recorded on the animal or its relatives across the range of traits that contribute to the selection index values.