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Plain-language guides for breeders and buyers — from first steps to breeding values, genetic testing, artificial insemination, embryos, and buying or importing frozen genetics. Every article lists its sources, and reads in your language.
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Start here: how WagyuTank worksWhat you can learn, find and do on WagyuTank — and how buying works when we take no cut.3 min readWhat is Wagyu?The four Japanese breeds behind the name, how a few hundred exported animals founded the herds outside Japan, and what fullblood, purebred and F1 actually mean.8 min read
Genetics
EPDs and EBVs explainedBreeding values are the most reliable tool you have for predicting how a bull's calves will perform. What the numbers mean, how much to trust them, and the mistakes buyers make.7 min readGenetic defect testing: carriers, results and safe matingsMost inherited defects in cattle are recessive: a carrier looks perfectly normal. How testing works, how to read the results, and how to use a carrier animal without producing affected calves.6 min readWagyu bloodlines: Tajima, Fujiyoshi, Kedaka and the restJapanese Black cattle were bred in isolation by prefecture for generations, and each line kept its own strengths. Why bloodlines still matter when you choose a sire.7 min readGenetic conditions in WagyuThe inherited recessive conditions Wagyu associations test for, what each one does, how results are reported, and how to breed around them.6 min read
Breeding
Artificial insemination basicsAI lets any herd use the best bulls in the world. Heat detection, synchronization, handling frozen semen, and when to call in a professional.7 min readEmbryo transfer basicsEmbryo transfer multiplies your best cows. How donors and recipients work, in vivo versus IVF embryos, fresh versus frozen, and what drives pregnancy rates.7 min readWagyu F1 programs: crossbreeding for marblingMost Wagyu beef in the world comes from crossbred cattle. How F1 programs work, what to look for in the sire and the cows, and why you need a buyer before you start.6 min read
Buying & importing
How to buy frozen genetics with confidenceWhat you are actually buying when you buy semen or embryos, the questions to ask a seller, the paperwork that should come with them, and how to pay safely.8 min readImporting semen and embryos: a practical checklistMoving frozen genetics across a border is mostly a paperwork exercise — but every step has to be done in the right order. A general checklist and the official authorities to contact.9 min readBuying Wagyu genetics: a checklistThe Wagyu-specific checks to make before you buy semen, embryos or breeding stock — on top of the general buying guide.5 min read
Beef & grading
Marbling and beef grading: BMS, A5, AUS-MEAT and USDAHow Japan, Australia and the United States grade marbling, what A5 really means, why the scales don't convert exactly, and why marbling is heritable.7 min readJapan and Wagyu exports: why genetics no longer leave JapanJapan stopped exporting Wagyu in the late 1990s, and since 2020 its law treats Wagyu semen and embryos as protected genetic resources. What that means for buyers everywhere.5 min read