Head Shepherd

Tune in this week on the Head Shepherd podcast to hear Ferg discuss the 2025/2026 ram sale period across Australia and New Zealand. He explains his approach to selecting the right ram team and the decisions breeders have been facing when producing rams for sale in an increasingly data-driven market. Ferg discusses the breeding values gaining attention, as well as buyer behaviour when information is available AND when it is missing. He also explains the neXtPredict tool developed in part...

Our guest this week, Angus Street, has worked across journalism, global agricultural marketing, Asian supply chains and livestock trading before stepping into the role of CEO at New Zealand Merino. In this episode, Angus reflects on taking on the role and guiding the organisation through a period of ongoing change across wool markets and supply chains. He and Mark chat about New Zealand Merinos’ role in connecting growers directly with global brands, the thinking behind ZQ and ZQRX and also t...

Ever wondered about farming New Zealand sheep in the UK, or considered farming UK shedding genetics in Australia? In this episode of Head Shepherd, Ferg speaks with Ian McDougall, a veterinarian whose career - and sheep - have taken him across Australia, New Zealand and the UK. Ian grew up on marginal country on South Australia’s Eyre Peninsula before moving into veterinary work and artificial breeding. Over the past four decades, his work has involved embryo transfer, semen freezing and larg...

How can commercial producers use breeding values without recording full pedigrees? This week, Mark chats with Carel Teseling, Chief Operating Officer at Angus Australia, to find out. Carel's career has taken him from South Africa's regional performance recording programs to 14 years of developing genetic tools for Angus Australia, a decade leading Australian Wagyu Association's genetics, and now back to Angus again, giving him unique insight into what actually works for producers across...

What if measuring worm resistance didn't require high parasite burdens and ALSO delivered double the heritability of egg counts? Sarah Preston, Lecturer at Federation University and cofounder of Swabtec, explains the development of their saliva-based test designed to measure immune responses to gastrointestinal worms in sheep, allowing resistance to be assessed without relying on high worm egg counts. She and Mark discuss why egg counts often fail to reflect adult worm burden, particularly in...

Gus Rose shares the recent results from the 'Genetics of foot health in Merinos' project, which is looking at footrot and foot structure in sheep in Australia. Gus shares what the data shows on the heritability of foot shape and its relationship with footrot, as well as other foot structure traits. Gus Rose explains how the dataset is being built, which traits are proving to be correlated, and where the current limits sit. Gus and Mark discuss the project's future and the significance o...

What do the genetics of tail length and the genetics of semen quality have in common? Not much, except that our guest, Marnie Hodge, Sheep Genetics Senior Development Officer, has researched them both. Tail length is moderately to highly heritable, but in her research, Marnie found that measuring tail length in centimetres versus a scored system gives you far more accuracy and picks up significantly more genetic variation, which means faster rates of genetic gain if you're selecting for it. B...