The breeding program at Spring-Rock Farm is our strength … our shining star.
To create a unique beef that your favorite chef can make into a great steak, it takes an initial combination of bovine genes that form 60 chromosomes of a genetically unique animal, plus three years at a farm like ours...
Here’s what’s important in our breed plan:
- Balance the four ancestral lines of black wagyu;
- Tajira/Tajima…known for their marbling
- Shigenami…known for their marbling and high quality meat
- Tottori/Kedaka…known for their larger frame and good nature
- Fujiyoshi…known for improved milk and larger frame
- Use proven carcass data to seek the best in bulls in each ancestral line, providing higher marbled and tender meat. We consider;
- Genetic gene star testing
- Herd statistics
- Frame scores, when available (see definitions)
- Strictly control in-breeding, using Wright’s Coefficient of Inbreeding as the benchmark. Our interpretation stipulates that every mating is evaluated by three criteria;
- There should be no common ancestor in the first 4 generations
- Keep the Wright’s Coefficient of Inbreeding Statistic below the national breed average of 5.8% (H. Neibergs)
- Continue ancestral pedigree analysis past three generations, going back as far as 15 generations when the information is known