Wagyu Selection $Indexes

The Australian Wagyu Association has implemented four world-leading Selection $Indexes - a significant step forward for Wagyu breeders to achieve faster rates of genetic gain and selection for profitability in Wagyu.

Following implementation of Single-Step Wagyu BREEDPLAN in April 2018, the AWA has worked intensively with to develop and deliver the new Wagyu Selection $Indexes.

The four profitability $Indexes are designed to optimise profit outcomes from commercial breeder, self-replacing, Fullblood terminal and F1 terminal production systems. The indexes are:

  • Breeder-Feeder $Index (BFI)
  • Self-replacing Breeding $Index (SRI)
  • Wagyu Fullblood Terminal $Index (FTI)
  • Wagyu F1 Terminal $Index (F1 Index)

Each of the new $Indexes are targeted specifically for a defined production and market scenario and that members can identify and use the index that best suits their purpose.

Each Index is based on specific production models and the index values for different animals are only comparable within the same Index

The Breeder-Feeder Index (BFI) was released in February 2024 and is a new balanced Selection Index, to assist Wagyu breeders to select the most profitable animals in a self-replacing herd, whilst better managing birth weight, milk production, and mature cow weight.

The Breeder-Feeder Index:

  1. Promotes a high growth response, especially for post-weaning gain/Carcase Weight;
  2. Reduces the number of high ranking extreme high and low Birth Weight EBV sires;
  3. Delivers positive emphasis for Milk and Scrotal Size;
  4. Applies a slight negative emphasis on high Mature Cow Weight while strongly positively emphasising Carcase Weight; whilst also
  5. Providing a high selection response for Marble Score.


Important Notice and Disclaimer

It is very important that you appreciate when viewing the AWA database that the information contained on the AWA database, including but not limited to pedigree, DNA information, Estimated Breeding Values (EBVs) and Index values, is based on data supplied by members and/or third parties.

Whilst every effort is made to ensure the accuracy of the information reported through AWA, AWA officers and employees assume no responsibility for its content, use or interpretation. AWA disclaims all liability (including without limitation, liability in negligence) for all expenses, losses, damages and costs you may incur as a result of the use by you of the data on this AWA database and the information supplied by ABRI and AGBU being inaccurate or incomplete in any way for any reason.

Regarding EBVs and Index values, it is very important to appreciate, and you need to be aware that:

  • EBVs are derived using Wagyu Single Step BREEDPLAN technology developed independently by the Animal Genetics and Breeding Unit (AGBU), using the information contained within the AWA database.
  • AGBU is a joint venture of NSW Department of Primary Industries and the University of New England, which receives funding for this purpose from Meat and Livestock Australia Limited.
  • AWA relies solely on advice provided by AGBU and ABRI in accepting Wagyu Single Step BREEDPLAN software.
  • EBVs published in Wagyu Single Step BREEDPLAN are estimates of genetic potential of individual animals and may not reflect the raw animal phenotype.
  • EBVs can only be directly compared to other EBVs calculated in the same monthly Wagyu Group BREEDPLAN analysis.

Regarding pedigree and DNA testing results submitted to the AWA, it is very important to appreciate, and you need to be aware that:

  • Pedigree and DNA data submitted and supplied to AWA may have errors in it which cannot be detected without further DNA testing.
  • Technology may have advanced since a particular test was undertaken so that previous inaccuracies which were not detectable are now able to be detected by current testing technology.
  • AWA estimates that less than 1% of the pedigree entries, ownership or breeding details in the AWA Herdbook may have errors or which may be misleading. For this reason, users ought to consider if they need to obtain independent testing of the relevant animal (if possible) to ensure that the data is accurate.

Regarding prefectural content, it is very important to appreciate, and you need to be aware that:

  • Prefectural content is based on the estimation of prefectural origin from Japanese breeding records of 201 foundation sires and 168 foundation dams.  As genotype-based parent verification is not used in Japan, and full Japanese registration certificates are not available for all foundation animals, exact prefectural composition for these sires and dams cannot be validated.
  • The calculation of prefectural content for Australian Herdbook animals relies on the accuracy of pedigree records and DNA samples provided by AWA members.
  • The reporting of prefectural content for animals within the AWA Herdbook relies on the calculation provided by ABRI.

If you consider that you do not understand or appreciate the nature and extent of the data provided on this website or the EBVs of a particular animal, then AWA strongly recommends that you seek independent expert advice.