The Merino Lifetime Productivity project is the world’s largest sheep experiment. The Macquarie site at Trangie, NSW is winding up but is unique as it focuses strongly on ewe type by examining the lifetime performance of a heavy cutting type versus a dual purpose type of sheep across 31 sires and a lifetime of production. Hear MLP Macquarie Chair Matthew Coddington, sheepclasser Chris Bowman, site enthusiast and breeder Graeme Wells and data analyst Dr Sue Mortimer from NSW DPI discuss the trends and industry ramifications for this momentous project.