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The Dairy Exporter Podcast

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The Dairy Exporter Podcast
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  • Episode 62 - Tackling heat stress and nitrogen management for sustainable dairy farming
    In this episode, DairyNZ scientist Dr Kirsty Verhoek explains how heat stress affects cow comfort and productivity, and how the Grazing Heat Load Index (GHLI) improves on traditional measures like the Temperature Humidity Index. Dr Paul Edwards discusses how GHLI, combined with digital technologies, helps farmers identify regional heat stress risks and take timely action. Dr Roshean Woods introduces a new bulk milk urea (BMU) tool that provides near real-time insights into dietary nitrogen surplus, helping farmers optimise herd health and reduce nitrogen loss. Together, they highlight how these tools support farm resilience and sustainability in a changing climate. Guests: Kirsty Verhoek, Senior Scientist, DairyNZ Paul Edwards, Science Lead, DairyNZ Roshean Woods, Senior Scientist, DairyNZ Hosts: Sheryl Haitana, Editor, Dairy Exporter Anne Lee, Deputy Editor, Dairy Exporter With a background in ruminant nutrition and greenhouse gas emissions, Dr Kirsty Verhoek is a senior scientist at DairyNZ, where she leads research into cow comfort and the impacts of heat stress in New Zealand’s pasture-based systems. Kirsty explains how heat stress occurs when cows can’t offload excess heat, resulting in behaviour changes, reduced feed intake, and lower milk production. She outlines how international indices like the Temperature Humidity Index (THI) fall short in NZ conditions, prompting the development of the Grazing Heat Load Index (GHLI), which incorporates solar radiation and wind speed. Kirsty also shares how digital technologies, such as rumen boluses and collar sensors, are enabling better detection of heat stress indicators like respiration rate. Kirsty emphasises the complexity of managing heat stress across diverse regional climates and the importance of tailored, farmer-led approaches. Through DairyNZ’s Enhanced Animal Care programme, she is working closely with farmers to co-develop practical strategies that prioritise cow wellbeing and support long-term farm resilience. With over 15 years at DairyNZ, Dr Paul Edwards specialises in farm systems research, focusing on heat stress risk for dairy cows. He discusses how his recent work, alongside Dr Kirsty Verhoek, uses digital technologies and climate data to predict heat stress through the Grazing Heat Load Index (GHLI), which forecasts cow respiration rates based on weather conditions. This allows farmers to implement timely mitigations. Paul highlights the regional differences in heat stress risk, with areas like Waikato, Bay of Plenty, and Canterbury most affected, and the importance of tailored solutions. He also explains his research on how cows use shade, using data from wearable sensors and LiDAR technology to better understand cow behaviour and inform farm infrastructure design. Paul emphasises that heat stress is an immediate concern, and his research provides farmers with practical, science-based strategies to improve cow wellbeing and resilience to climate change. With years of experience in ruminant nutrition and environmental science, Dr Roshean Woods is a senior scientist at DairyNZ, where she leads research into nitrogen management and sustainability in New Zealand’s pasture-based dairy systems. Roshean explains the significance of bulk milk urea (BMU) as an indicator of dietary nitrogen surplus, highlighting how it can help farmers monitor herd health and optimise nutrient efficiency. She outlines the recent development of a BMU indicator tool, designed to provide near real-time data to support farm management decisions. This tool helps farmers identify when there is a greater risk of nitrogen excretion and offers practical guidelines for mitigating environmental impacts, such as reducing nitrogen loss to waterways. Roshean emphasises the complexity of nitrogen management in New Zealand’s diverse farming systems, and how the BMU tool fits alongside other strategies to improve farm efficiency, boost productivity, and protect the environment. Buy the Dairy Exporter Autumn Issue here SUBSCRIBE TO DAIRY EXPORTER - EMAIL NEWSLETTER (FREE - WEEKLY) SUBSCRIBE TO DAIRY EXPORTER - MAGAZINE ($79/YR FOR 4 JOURNALS)See omnystudio.com/listener for privacy information.
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  • Episode 61 - Understanding the ETS: What are the opportunities?
    In this episode, Sam Mander, director of AgriIntel, walks listeners through the New Zealand’s Emissions Trading Scheme (ETS), giving a 101 on the scheme and outlining its opportunities for farmers. He discusses carbon credits, forestry models, and earning NZUs, including how to earn NZU’s from agroforestry and riparian planting. Sam highlights the financial and environmental benefits of understanding the ETS and how it can help farmers navigate the future of low-emissions agriculture. Anne Lee also recently attended SIDE where she spoke to Cameron Bagrie about American President Donald Trump’s recent tariffs and how economic stability will look heading into the future. Guest: Sam Mander, Director, Agri Intel Cameron Bagrie, Lead Economist, Bagrie Economics Hosts: Sheryl Haitana, Editor, Dairy Exporter Anne Lee, Deputy Editor, Dairy Exporter Sam Mander, director of AgriIntel, explores the intricacies of New Zealand’s Emissions Trading Scheme (ETS) and its potential benefits for farmers. He outlines how carbon credits and sustainable practices such as agroforestry and riparian planting can provide financial rewards while benefiting the environment. Sam emphasises the importance of understanding carbon pricing and eligibility for NZUs, outlining how they could be used in a strategic, long-term approach in farming. He highlights the challenges of navigating the ETS, but believes farmers can unlock significant opportunities by staying informed. Sam stresses that careful planning, informed decision-making, and the right support are essential to maximising the financial and environmental advantages of the ETS. Cameron Bagrie, Lead Economist at Bagrie Economics, explores what he calls the tectonic shifts in the factors underpinning economies and the way global trade is being influenced by issues now deemed to be related to national security. He focuses on how these changes impact the dairy industry, productivity challenges and currency fluctuations. Cameron emphasizes the importance of strategic adjustments in trade policy and economic performance to navigate the ever changing economic landscape. Buy the Dairy Exporter Autumn Issue here SUBSCRIBE TO DAIRY EXPORTER - EMAIL NEWSLETTER (FREE - WEEKLY) SUBSCRIBE TO DAIRY EXPORTER - MAGAZINE ($79/YR FOR 4 JOURNALS)See omnystudio.com/listener for privacy information.
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  • Episode 60 - The changing face of agriculture in New Zealand
    In this episode, David Jensen, a dairy farmer and kiwifruit grower, shares his experience transitioning to kiwifruit cultivation. He discusses challenges like labour shortages, investment costs, and the evolving kiwifruit market, as well as the impact of political policies on agriculture. David highlights the importance of understanding farming dynamics and key factors for successful diversification, including strategic investments and staying informed on market trends. Guests include: David Jensen, Kiwifruit Orchard Owner Hosts: Sheryl Haitana, Editor, Dairy Exporter Anne Lee, Deputy Editor, Dairy Exporter David Jensen, a dairy farmer and kiwifruit grower, discusses the shift from dairy farming to kiwifruit cultivation in New Zealand. He explores the challenges of labour shortages, high investment costs, and the fluctuating dynamics of the kiwifruit market. While dairy farming remains a viable option, Jensen highlights the growing appeal of diversification in agriculture. He identifies the hurdles farmers face in transitioning to new crops, such as understanding market trends and securing the right investments. Jensen advocates for a strategic approach to diversification, stressing the importance of staying informed about the agricultural sector and aligning business decisions with both market opportunities and policy changes. He believes that successful diversification relies on thoughtful planning, investment, and support from the right financial and governmental structures. Listen to the episode on solar HERE Buy the Dairy Exporter Autumn Issue here SUBSCRIBE TO DAIRY EXPORTER - EMAIL NEWSLETTER (FREE - WEEKLY) SUBSCRIBE TO DAIRY EXPORTER - MAGAZINE ($79/YR FOR 4 JOURNALS)See omnystudio.com/listener for privacy information.
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  • Episode 59 - How land use is changing in NZ agriculture
    In this episode, we explore a shift from traditional dairy to innovative crops in New Zealand agriculture. Lee Matheson, Managing Director of Perrin Ag, discusses the challenges and opportunities of land use change, focusing on crops like hemp and chestnuts. Gavin Tayles, COO of FarmRight, shares insights on their transition to high-value horticulture, particularly large-scale apple orchards. Red Martin, General Manager of Pipfruit at FarmRight, talks about modern growing systems and new apple varieties. Together, they highlight how strategic investment, advanced technology, and sustainable practices are reshaping the agricultural landscape in New Zealand. Guests include: Lee Matheson, Managing Director, Perrin Ag Gavin Tayles, Chief Operating Officer, FarmRight Red Martin, General Manager of Pipfruit, FarmRight Hosts: Sheryl Haitana, Editor, Dairy Exporter Anne Lee, Deputy Editor, Dairy Exporter Lee Matheson, Managing Director of Perrin Ag, leads discussions on land use change in New Zealand agriculture, balancing profitability, diversification, and sustainability. While dairy remains viable, emissions targets push farmers toward alternatives. Matheson identified challenges in scaling new crops like hemp and blueberries, from infrastructure gaps to market uncertainty. Now, he works to bridge these barriers, advocating for investment, bank lending, and co-operative collaboration. He stresses urgent action to align land use with climate goals, seeing innovation as key to a sustainable, profitable future—provided the right policies and financial support are in place. Gavin Tayles, COO of FarmRight, is leading New Zealand’s shift from dairy to high-value horticulture. While dairy remains vital, climate change and sustainability demands drive diversification. Since 2018, he has expanded FarmRight into apples, kiwifruit, and hops, transforming 250 hectares of dairy land into a large-scale apple orchard for the NZ Superfund. Tayles navigates challenges like upfront costs and environmental risks through strategic investment and technology. With plans for 900,000 trees, the orchard will be NZ’s largest pipfruit site. He believes smart investment and policy can ensure a profitable, sustainable agricultural future. Red Martin, GM of Pipfruit at FarmRight, is transforming Canterbury’s apple industry, overseeing one of New Zealand’s largest pipfruit operations. With decades of expertise, he leads orchard development and modern growing systems. FarmRight’s 250-hectare, fully netted orchard will house 900,000 trees, producing 1.47 million cartons annually. Using the V trellis system and high-yield varieties like Rocket and Jole, Martin maximises efficiency. He navigates financial hurdles, including costly proprietary variety licenses. The shift from dairy to apples will cut carbon emissions by 81%, nitrogen losses by 82%, and water use by 40%, ensuring a more sustainable future. Listen to the first five episodes of Agraforum’s newest podcast series, Where Inches Matter, here Buy the Dairy Exporter Autumn Issue here SUBSCRIBE TO DAIRY EXPORTER - EMAIL NEWSLETTER (FREE - WEEKLY) SUBSCRIBE TO DAIRY EXPORTER - MAGAZINE ($79/YR FOR 4 JOURNALS)See omnystudio.com/listener for privacy information.
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  • Episode 58 - AI on the farm: revolutionising dairy management
    In this episode we explore the transformative power of AI in the dairy industry. Waikato sharemilker Matthew Zonderop discusses how AI is revolutionising his dairy farm, from optimising herd genetics to improving decision-making in farm management. He shares his journey from scepticism to embracing AI, and how his venture, Perfect Cow Breeding Solutions, helps other farmers do the same. PhD student Mamehgol Yousefidashliboroun from the University of Canterbury joins to talk about her research into AI-powered chatbots for dairy farmers. She explains how these tools help manage information overload and preserve valuable farm knowledge, offering tailored insights and streamlining decision-making for better efficiency. Guests include: Matthew Zonderop, Waikato Sharemilker Mamehgol Yousefidashliboroun, PHD Student, University of Canterbury Hosts: Sheryl Haitana, Editor, Dairy Exporter Anne Lee, Deputy Editor, Dairy Exporter Waikato sharemilker Matthew Zonderop is harnessing AI to transform his dairy operation, using it as a powerful tool for herd improvement, farm management, and decision-making. Initially sceptical, he discovered AI’s potential after it quickly corrected an error in his spreadsheet, leading him to explore its wider applications. Now, AI analyses his herd’s genetic data, optimising bull selection and accelerating genetic gains beyond traditional methods. By integrating AI into daily operations, Matthew has shifted from reactive to predictive decision-making, streamlining feed budgeting, paddock planning, and financial forecasting. His tailored AI model stores farm-specific data, providing instant, data-driven insights that enhance efficiency. Seeing the potential for broader impact, he founded Perfect Cow Breeding Solutions to help other farmers leverage AI for genetic and management improvements. While some may question AI’s limitations, Matthew believes the only constraint is imagination, viewing it as a game-changer for the dairy industry’s future. PhD student Mamehgol Yousefidashliboroun from the University of Canterbury is researching how AI-powered chatbots can support dairy farmers in managing information overload. In collaboration with AgResearch, her work focuses on making AI tools both technically effective and user-friendly. Mamehgol highlights chatbots as intelligent assistants, helping farmers filter vast amounts of data to provide instant, tailored insights. These tools can also preserve decades of farm knowledge, ensuring valuable experience is not lost. By integrating AI, chatbots simplify decision-making, reducing the need to sift through endless reports and applications. Looking ahead, Mamehgol sees chatbots evolving to analyse images and videos, assisting with crop and livestock monitoring. She encourages farmers to engage with AI, as increased interaction improves chatbot recommendations. While AI will not replace human expertise, it can act as a powerful extension of farmers’ knowledge, combining intuition with data-driven insights to improve efficiency and sustainability. Listen to the first five episodes of Agraforum’s newest podcast series, Where Inches Matter, here Buy the Dairy Exporter Autumn Issue here SUBSCRIBE TO DAIRY EXPORTER - EMAIL NEWSLETTER (FREE - WEEKLY) SUBSCRIBE TO DAIRY EXPORTER - MAGAZINE ($79/YR FOR 4 JOURNALS)See omnystudio.com/listener for privacy information.
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About The Dairy Exporter Podcast

It’s been your mainstay in dairy farming since 1925 as your trusted source of addingvalue to your dairy business, now it’s time for the Dairy Exporters’s seasonal storiesto exclusive weekly interviews to come straight to your ears with this brand-spankingnew podcast. It’s here you can seek out the guidance, inspiration and smarts it takes to dairy farminto the future to be outstanding in your field on The Dairy Exporter Podcast hostedby Editor &Deputy Editor of Dairy Exporter, Sheryl Haitana & Anne Lee and herfellow journalists.Get in touch with our Editor of Dairy Exporter on [email protected] if you have a great insight to share with ourthousands of readers and listeners in New Zealand and around the world. Don’t miss our weekly episodes of The Dairy Exporter Podcast by hitting thesubscribe button now and join our Dairy Exporter weekly email newsletter to get thelatest in-depth stories in your mailbox so you are always ahead of the game in thebusiness of dairy farming into the future. Visit the website to subscribe: www.dairyexporter.co.nz 
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