Angus Australia


Understanding EBVs and Selection Indexes

The TransTasman Angus Cattle Evaluation (TACE) is the genetic evaluation program adopted by Angus Australia for Angus and Angus influenced beef cattle. TACE uses Best Linear Unbiased Prediction (BLUP) technology to produce Estimated Breeding Values (EBVs) of recorded cattle for a range of important production traits (e.g. weight, carcase, fertility).

TACE includes pedigree, performance and genomic information from the Angus Australia and New Zealand Angus Association databases to evaluate the genetics of animals across Australia and New Zealand.

TACE analyses are conducted by the Agricultural Business Research Institute (ABRI), using software developed by the Animal Genetics and Breeding Unit (AGBU), a joint institute of NSW Agriculture and the University of New England. Ongoing TACE research and development is supported by Meat and Livestock Australia.

This module on Understanding EBVs and Selection Indexes will be looking in depth at some of the things that you need to consider when looking at TACE information. These topics include:

  • What is an EBV?
  • Using EBVs to compare and benchmark an animal’s genetics
  • Birth EBVs
  • Growth EBVs
  • Fertility EBVs
  • Carcase EBVs
  • Feed Efficiency EBVs
  • Structural Soundness EBVs
  • Selection Indexes

These topics are each outlined in the resource shown below.

Further to this, if you would like to explore the topics in depth, just work your way through the module topics on the following pages.

Several topics have optional activities for you to test your knowledge.

At the end of the module, you will have an opportunity to send feedback and ask any questions that reading the materials might have raised.