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MateSel

You define the objective – MateSel delivers the best possible outcome. 

What is MateSel? 

MateSel (Mate Selection) is a software package designed to help livestock breeders utilise available genetics in line with their breeding objectives, enabling more informed and effective mating decisions. By combining pedigree information, $Index values and Wagyu Breeding Values (WBVs), MateSel generates optimised mating allocations along with backup mating plans using nominated sires and dams. 

The program aims to increase the genetic merit of progeny while managing inbreeding and maintaining long-term genetic diversity. It also considers practical on-farm factors such as artificial insemination programs (including semen straw availability), natural matings and mating group structures, making it far more comprehensive than traditional mating planning tools. 

Why Use MateSel and What Are the Benefits? 

MateSel evaluates all possible mating combinations against defined breeding objectives to identify the most suitable pairings and lift whole-herd performance generation after generation. It removes much of the guesswork by delivering evidence-based recommendations supported by advanced genetic evaluation technologies, giving breeders greater confidence and accuracy in their breeding decisions. 

Rather than simply selecting the highest-performing animals, it balances genetic gain with sustainable breeding practices to maintain future breeding flexibility. 

Addressing Wagyu Breeding Challenges 

Wagyu breeders face unique challenges. The breed’s global reputation depends on exceptional marbling and eating quality, while genetic diversity must be carefully managed due to reliance on a relatively narrow gene pool. 

MateSel helps address these challenges by: 

  • Maximising genetic gain in high-value traits such as marbling, carcase weight and eating quality 
  • Maintaining genetic diversity, reducing the risk of inbreeding depression in future generations 
  • Enabling targeted breeding strategies, such as improving fertility while maintaining carcase performance 
  • Integrating with genomic testing and WBVs, delivering robust, data-driven mating recommendations 

Practical Benefits for Breeders 

Beyond genetic optimisation, MateSel supports day-to-day breeding and management decisions, including: 

  • Selecting which sires to use most effectively 
  • Determining semen straw requirements 
  • Identifying and allocating backup sires 
  • Prioritising cows or heifers for joining, retention or culling 

It can also limit the overuse of heavily utilised sires within a herd, helping to manage long-term relatedness and preserve genetic diversity. 

What Do Breeders Control? 

MateSel gives breeders full control over their breeding direction by allowing them to define clear objectives that align with their production system and long-term goals, such as targeting a specific $Index or managing inbreeding levels. While breeders set these objectives and constraints, MateSel evaluates all possible mating combinations and delivers the optimal outcome to achieve those goals. 

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IMPORTANT NOTICE - Terms & Conditions


It is a condition of use of this database that you accept these terms and conditions. 

It is important that you appreciate when accessing the Australian Wagyu Association Limited (AWA) database (which may be hosted on an external website) that the information contained on the AWA database, including but not limited to pedigree, DNA information, Wagyu Breeding Values (WBVs) and Index values (together called Database Information), is based on data supplied by AWA members and/or third parties. 

Whilst sincere effort is made to ensure the Database Information is accurate and complete, to the extent permitted by law, AWA, its officers and employees, shall not be responsible for its use or interpretation, and you use the Database Information at your own risk. Please be aware of the following limitations of the Database Information.  

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

  • WBVs are derived using genetic evaluation technology developed for the AWA, using information contained within the AWA database and parameters derived from it.
  • WBVs are estimates of genetic potential of individual animals and may change with addition of new data or with new parameters.
  • WBVs are genetic merit estimates only and may not reflect the raw animal phenotype.
  • WBVs can only be directly compared to other WBVs calculated in the same AWA genetic analysis.

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

  • Animals whose registration identifiers start with PED are Pedigree Recorded Animals. What this means is that the details which AWA used to register the animal were obtained from a Recognised Wagyu Registry Organisation – in other words a Wagyu breed association based outside of Australia. AWA has not independently verified the information with respect to the animal or the details recorded about the animal. You should read AWA’s by-laws which set out details regarding the definition of a Pedigree Recorded Animal. 
  • 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 genetic issues or inaccuracies which were previously not detectable are now able to be detected by current testing technology (i.e. if the animal was tested again with current 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 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.   

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

  • As genetic testing results are provided by independent DNA testing laboratories at the request of AWA members, AWA relies solely on the accuracy of the reporting of genetic testing as completed by the laboratories. 
  • AWA uses GeneProb software to calculate the likelihood of pedigree animals being a carrier of genetic conditions.  This likelihood is an estimate based on the available genetic testing results. 

If you consider that you do not understand or appreciate the nature and/or implications of the data provided on this website or the WBVs of a particular animal, then AWA strongly recommends that you seek expert advice.  Note there is substantial technical information and articles on the Wagyu website to assist our members. 

AWA’s liability for any loss or damage, consequential or otherwise, suffered or incurred by you or your related business, arising directly or indirectly from your use of Database Information, to the extent permitted by law, is limited to AWA providing you with a refund for the fees paid for the service (if any), or AWA re-performing the service, where possible, at the election of AWA.  

AWA administers this database in good faith to support AWA members and the industry. AWA does not represent or warrant that the animals recorded in this database, or animals breed from them, will achieve any particular genetic or phenotype performance.


THIS DISCLAIMER HAS BEEN UPDATED AS OF 03/02/2026, PLEASE ENSURE YOU HAVE READ IT IN DETAIL