Our
Bloodlines
Every champion begins with the right genetics. At MDYD Thoroughbreds, our breeding program is anchored by Australia's most influential sire lines — chosen for their proven ability to produce elite performers.
The Sire Lines Behind Our Program
These sire lines. Decades of combined influence. The foundation of every horse we breed, sell, and prepare at MDYD Thoroughbreds.
Bivouac is a product of Australian breeding at its finest — combining raw speed, physical strength, and remarkable consistency. A son of Exceed And Excel, he captured the imagination of the racing world with his explosive performances, cementing his place among the elite sprinters of his generation. Now at stud, he carries forward a legacy of Australian speed that continues to shape the modern thoroughbred.
Breeding Philosophy
Great horses are not produced by accident. Our breeding decisions are guided by a disciplined, evidence-based philosophy refined over generations.
Pedigree Analysis
Every mating decision begins with rigorous pedigree analysis. We study nick patterns, dosage figures, and the performance records of close relatives to identify the most promising combinations.
Physical Assessment
Bloodlines tell half the story. We assess each horse physically — conformation, movement, muscle development, and temperament — to ensure the pedigree is matched by the physical tools to succeed.
Long-Term Thinking
We breed for the long term, not the short sale. Our goal is to produce horses that perform at the highest level and, in turn, become the foundation mares and sires of the next generation.
Breed the best to the best and hope for the best — but at MDYD, we leave as little to hope as possible.
— MDYD Thoroughbreds, Victoria