AS many commercial bull buyers consider the genetic information offered in sale catalogues over coming weeks, among the raft of information offered will be a range of breeding indexes.
Breeding indexes are generally published as the final series of columns in the BreedPlan data that are published for each bull in the catalogue.
The role of these indexes in the simplest explanation, is to offer a ranking on each bull’s genetic suitability for a particular production system or target market.
In practice, indexes balance the relative growth, carcase, and fertility genetic merits of each…