Speaker Profiles

David Johnston

David has been a beef cattle geneticist at AGBU for more than 30 years. During that time, David has been responsible for the design and management of several large beef cattle breeding projects, and the implementation of the research into BREEDPLAN. David is the project leader of a large MLA-funded breeding project in Queensland and the Northern Territory that is developing enhanced genetic evaluation of female reproduction traits through the implementation of new genomic selection techniques in tropically-adapted beef breeds. David spends considerable time interacting with the beef industry and has been an invited speaker at scientific forums, both nationally and internationally.

Paul Williams

Paul Williams is a Technical Officer with the Agricultural Business Research Institute (ABRI)’s extension services. In this role, Paul provides beef breeders with extension services and technical support to maximise understanding and use of genetic technologies, including the BREEDPLAN genetic evaluation. Paul previously worked in beef cattle research specialising in Real Time Ultrasound scanning for both carcase and fertility traits. Paul has been with ABRI since 2012 and is based in Rockhampton.

Tim Emery

Since 2009, Tim has delivered extension activities and provided technical support to the North Australian beef industry as a Beef Extension Officer with the Queensland Department of Agriculture and Fisheries (DAF) and Technical Officer with Tropical Beef Technology Services (TBTS). Over his career, particularly during his 4.5-year secondment with TBTS, he has spent considerable time working closely with commercial and seedstock producers to increase the adoption of BREEDPLAN and associated genetic technologies. Tim lives in Roma, is involved in his parents’ nearby beef business, owns a small breeding herd and was named a Zanda McDonald Award Finalist in 2021.

David Greenup

With his wife Sonya, and their three sons and their families, David Greenup operates the Rosevale Santa Gertrudis Stud in south-east Queensland.  The stud herd of 700 breeders is one of the most extensively performance recorded herds in northern Australia.  The 67th Rosevale Sale was held in 2023 – the longest running on-property, annual sale of any breed in Australia.  Over 450 principally pasture-prepared bulls are sold annually.  Bulls retained out of the Rosevale commercial herd (also 700 breeders) receive genomically-derived BREEDPLAN EBVs.  A strong focus is placed on breeding extremely fertile, functional cattle that meet market specifications at an early age, off pasture.

Steve Miller

Dr. Stephen Miller joined AGBU in late 2020, where he now serves as Director.  Prior to this, he was the Director of Genetic Research for Angus Genetics Inc. in the USA and was a principal scientist with the animal genomics team at AgResearch Ltd. in New Zealand (2013-2016).  Originally from Canada, Dr. Miller was on faculty at his alma mater, the University of Guelph for 14 years where he finished as the Director of the Centre for Genetic Improvement of Livestock.  Best known for his work in beef cattle, Dr. Miller has 25 years of experience with livestock genetics, genomics and technology.

Kara Knudsen

In 2013, Kara Knudsen studied accelerating livestock genetics as part of her Nuffield Scholarship. During her travels, she gained exposure to a wide variety of tools to improve the genetic composition of the livestock herd and has since adopted some of these tools to benefit their own commercial herds at Mundubbera and Hughenden. They have a deep understanding of EBVs and have utilised them heavily as part of AI, ET and crossbreeding programs to drive their herd forward into the future. The Knudsen’s strive to have a productive and adapted breeding herd, whilst maintaining market accessibility.

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