Built for Performance
Bred for Efficiency
Ready for the Future
Who We Are
Coopworth Genetics NZ is a collective of stud breeders from across New Zealand, united by a single purpose. For over 50 years we have been performance recording, advancing the breed through rigorous genetic selection while maintaining the physical soundness that makes Coopworth sheep suited to any environment.
We don't just breed good sheep. We measure everything, back the data and hold ourselves to standards that consistently rank Coopworth breeders above the rest. That's not a claim, it's a track record.
What Coopworth Means for Your Farm?
The challenges facing the sheep and beef sector are real, and they're not going away. Rising costs, environmental pressure, labour shortages - the list is long. But here's the other side of that story: the world wants our product. Demand for protein has never been higher, and New Zealand farmers are among the most efficient, most trusted producers on the planet. Good animal welfare, strong environmental stewardship, world-class food safety. Give yourself some credit.
This is our opportunity, but only if we focus on what we can control. That means looking within your own farm gate. Performance. Productivity. Efficiency.
The answer isn't more stock. It's more from less. Fewer inputs, lower costs, less impact on the land, reduced greenhouse gas emissions, all while maintaining production and profit. New Zealand farmers have adapted and lifted performance before. We can do it again.
Genetics are a key part of that solution. Moderately sized ewes that wean more lambs, earlier. Hoggets that lamb successfully. Ewes selected for longevity, meaning fewer replacements needed. High growth rates and strong meat yield. Tolerance to disease and parasites to cut wastage and reduce drench dependency.
That's exactly what Coopworth delivers. Clean heads and points with no eye-wigging. Outstanding mothering instinct with minimal shepherding at lambing. Every registered Coopworth flock is performance recorded, and selection is based on measured results, not pedigree. Ewes must rear three lambs in their first two lambings. Rams must rank in the top 15% of their flock. No exceptions.
Work smarter, not harder. Coopworth genetics deliver.
Our History
The Coopworth breed was born out of post-war science and one simple goal — more lambs. In 1950, Lincoln University began crossbreeding trials using Border Leicester sires over Romney ewes, producing first-cross lambs that weaned 20–30% more than straight-bred flocks.
The results were compelling. Researchers set about locking in those gains permanently by developing a pure-breeding interbred sheep that carried the best traits of both parent breeds. Performance recording and rigorous selection were central from day one, and only the best made the cut.
By the late 1960s, breeders were confident their stabilised interbred sheep were equal to, or better than, the original first-cross animals. In 1968, the Coopworth Breed Society was formed. Over 50 years later, that commitment to measured, proven performance remains the foundation of everything we do.
Coopworth Ram over a Maternal Ewe Flock
Putting a Coopworth ram over your maternal ewe flock is one of the smartest commercial decisions you can make. The cross delivers exactly what a productive ewe flock needs: high lambing percentages, strong lamb growth rates and excellent mothering ability.
At the heart of this is hybrid vigour. Crossing a Coopworth ram over a maternal ewe flock, such as Romney, unlocks the natural performance boost that comes from combining two complementary genetic lines. The result is progeny that outperform both parent breeds in the traits that matter most to commercial farmers. Better survival rates, faster growth, stronger constitution and greater overall resilience across variable conditions and environments.
Coopworth-cross ewes are easy care, good milkers and built to perform. They wean well, require minimal intervention at lambing and produce a lamb that can be drafted early if conditions allow. Replacements from this cross carry the best of both breeds, making them a sound long-term investment in your flock's productivity.
For commercial farmers looking to lift performance without adding labour or cost, the Coopworth ram over a maternal ewe flock is a proven and powerful starting point.
