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Buying Wagyu genetics: a checklist

5 min read · Last updated 2026-10-01

The Wagyu-specific checks to make before you buy semen, embryos or breeding stock — on top of the general buying guide.

Read How to buy frozen genetics with confidence first. This checklist adds what is specific to Wagyu.

1. Registration

  • Which registry? The American Wagyu Association, the Australian Wagyu Association, the American Akaushi Association (Japanese Brown only) or another national Wagyu society.
  • The animal's registration number and grade (fullblood, purebred, percentage) under that registry's rules. See What is Wagyu?
  • For embryos: both sire and donor registered, so calves can be registered.

2. DNA parentage

  • Is the sire (and the donor dam) DNA-typed and are calves parent-verified? The American Wagyu Association requires active AI sires and embryo donors to be DNA-typed and tested for known recessives, and embryo calves to be parent-verified before registration.

3. Genetic conditions

  • Tested results for B3, CHS, CL16, F11 and IARS, plus any others your registry tests. Prefer tested free; a carrier is usable only on tested-free mates. See Genetic conditions in Wagyu.

4. Breeding values and data

  • Current EBVs/EPDs from the registry (for example Australian Wagyu Association BREEDPLAN EBVs, which include Marble Score and $Index values), with accuracy and percentile rank.
  • Carcass data from progeny where available — marble score, eye muscle area, carcass weight — tied to parent-verified calves.
  • Remember: breeding values from different registries cannot be compared directly.

5. Bloodline and inbreeding

  • What lines does the animal carry (Tajima, Fujiyoshi, Kedaka...)? Does it suit your goal — marbling, frame, maternal?
  • Check common ancestors with your cows. Wagyu outside Japan descend from a small founder group; avoid stacking the same famous bulls.

6. Black or red

  • Japanese Black, Japanese Brown (Akaushi) or a Red/Black cross? Registries treat the cross differently — confirm it will register the way you need.

7. Export eligibility (if crossing a border)

  • Was the semen or embryo collected at an approved centre with health testing that meets your country's import conditions? See Importing semen and embryos.
  • Note: genetics cannot be sourced from Japan itself — see Japan and Wagyu exports. Legitimate Wagyu genetics on the market descend from animals exported before the late 1990s.

8. Paperwork and payment

  • Semen/AI certificates or embryo transfer certificates for registering calves.
  • Inventory confirmed with the storage facility before you pay in full.
  • Never pay unverified sellers with gift cards, crypto or untraceable transfers.

Key takeaways

  • Registry, grade, DNA parentage and tested results for B3, CHS, CL16, F11 and IARS — every time.
  • Current EBVs with accuracy; carcass data if you can get it.
  • Watch bloodline balance and inbreeding.
  • For exports, confirm approved collection and the destination's import rules first.

Sources

  1. AWA Rulebook & Handbook (rev. 2022) — American Wagyu Association
  2. Genetic Conditions in Wagyu — Australian Wagyu Association
  3. F1 Wagyu Fullblood Bull Buying Guide — Australian Wagyu Association
  4. Wagyu Breeders Handbook — Texas Wagyu Association
  5. American Akaushi Association