Elite Cattle Genetics Shaping the Future of Wagyu
Our featured animals represent the very best of the Black Jack Ranch breeding program, world-class sires and females whose pedigrees, performance data, and proven traits set them apart on a global scale. From record-setting marbling scores to unmatched muscling and maternal strength, each animal here embodies the standard we strive for: genetics that raise the bar for carcass quality, herd improvement, and breed advancement.
LMR Samaurai 1749J
Elite Wagyu Sire with Proven Carcass and Maternal Potential
LMR Samauri 1749J is a standout herd sire combining world-class marbling genetics with elite maternal and carcass performance. He embodies the strength, heritage, and superior genetics of the Wagyu breed. With a deep chest, muscular build, and striking black coat, he carries the classic traits that define exceptional Wagyu beef: intense marbling, melt-in-your-mouth tenderness, and rich, buttery flavor.
Sired by Mayura L0010, one of the most influential sires in the Wagyu breed, and out of LMR Ms Itoshigenami 3447A, Samauri’s pedigree blends rare, high-performance bloodlines from the Aizakura and Chisahimematernal lines. Samaurai is a cornerstone of our seedstock program, and his influence is only just beginning!
Boni 413M
#1 Marbling Score in the World (MS +4.7)
Boni 413M stands at the forefront of Wagyu genetics, uniting world-leading marbling with exceptional muscling, a combination virtually unmatched in the breed. The daughter of Itoguni 308H and descendant of the renowned Hikokura maternal line, her pedigree is rooted in proven performance and breed-defining quality. With standout carcass traits of EMA +16.2, MS +4.7, and Marbling Fineness (MF) +72, she offers an unparalleled genetic package for advancing both carcass quality and yield.
Global Rankings:
- #1 in the World for Marbling Score (MS +4.7)
- #1 F1 Terminal Index (F1TI) Female globally
- #5 overall Fullblood Terminal Index (FTI) in the world
- #7 Beef Finishing Index (BFI) globally
S Yuriko 412M
#2 F1 Terminal Index (F1TI) Female in the World
Wyndford S Yuriko 412M is a rare blend of elite performance and proven pedigree, ranking among the most genetically valuable Wagyu females globally. The daughter of a distinguished maternal line tracing back to the dam of Arubial 1701, a sire whose semen has sold for over $30,000 per straw, Yuriko brings exceptional breeding potential. She sits in the top 1% for Eye Muscle Area (EMA), Retail Beef Yield (RBY), and Marbling Score (MS), with standout carcass traits of EMA +14.5, MS +4.0, Carcase Weight +61, and RBY +2.5.
Global Rankings:
- #2 F1 Terminal Index (F1TI) female in the world
- #2 Fullblood Terminal Index (FTI) overall
- Top 1% for EMA, RBY, and MS
2025 Elite Female Acquisition
In August 2025, Black Jack Ranch expanded its nationally recognized seedstock program with the acquisition of 17 elite Wagyu females from Wyndford Farms’ USA Division. These females represent some of the most sought-after bloodlines in the country, combining proven maternal strength, exceptional marbling potential, and consistent performance traits. Among them are Boni 207K, the dam of Boni 413M, and Boni 417, a full sister to Boni 413M. This acquisition is a long-term investment in maternal excellence, genetic integrity, and the continued advancement of Wagyu in the United States. These females strengthen the foundation of our breeding program and reinforce our commitment to producing cattle that deliver elite performance from pasture to plate.
Want access to our elite genetics for your own herd improvement?
Contact us for information about embryo and semen sales, breeding stock, and progeny data. We’re certified to ship semen in the United States, Canada, Australia & Costa Rica, available in conventional and female sexed options.