Gavin Heywood is an Australian farmer and entrepreneur from New South Wales, whose family has worked on the same land for over 120 years. He runs a unique business, Serum Australis, which supplies animal blood for medical diagnostics, research, and commercial applications while managing his farm with holistic grazing practices. Gavin’s journey into the blood industry began with his background in laboratory work and an early attempt to sell goat serum, which led to his discovery of a larger market for horse blood. Alongside his business, he is committed to regenerative agriculture, using time-controlled grazing to restore degraded farmland, increase biodiversity, and improve soil health.

In this episode, John and Gavin discuss:

• Running 250 horses in a single mob using time-controlled grazing

• Supplying blood and serum for hospitals, universities, and research labs under strict ethical guideline

• Gavin’s years of trial and error building a successful niche business

• Using horses as a tool for breaking up soil, regenerating pastures, and fostering tree growth

• Creating ecosystem improvements, including better water retention and increased plant diversity

• Gavin’s plans to expand his regenerative efforts by transitioning toward cattle and sheep grazing

Additional Resources To learn more about Serum Australis and the work Gavin is doing, please visit: https://www.serumaustralis.com.au/

About John Kempf John Kempf is the founder of Advancing Eco Agriculture (AEA). A top expert in biological and regenerative farming, John founded AEA in 2006 to help fellow farmers by providing the education, tools, and strategies that will have a global effect on the food supply and those who grow it.

Through intense study and the knowledge gleaned from many industry leaders, John is building a comprehensive systems-based approach to plant nutrition – a system solidly based on the sciences of plant physiology, mineral nutrition, and soil microbiology.

Support For This Show & Helping You Grow Since 2006, AEA has been on a mission to help growers become more resilient, efficient, and profitable with regenerative agriculture. 

AEA works directly with growers to apply its unique line of liquid mineral crop nutrition products and biological inoculants. Informed by cutting-edge plant and soil data-gathering techniques, AEA’s science-based programs empower farm operations to meet the crop quality markers that matter the most.

AEA has created real and lasting change on millions of acres with its products and data-driven services by working hand-in-hand with growers to produce healthier soil, stronger crops, and higher profits.

Beyond working on the ground with growers, AEA leads in regenerative agriculture media and education, producing and distributing the popular and highly-regarded Regenerative Agriculture Podcast, inspiring webinars, and other educational content that serve as go-to resources for growers worldwide.

Learn more about AEA’s regenerative programs and products: https://www.advancingecoag.com