Inbreeding calculator

Successful farmers across Ireland use our dairy cattle Inbreeding Calculator to see the inbreeding percentage for potential matings and reduce the risks of inbreeding in their dairy herds.

Inbreeding coefficient for single mating pair
  • Enter the NZ bull code of the bull you intend to use for breeding
  • Enter the NZ bull code of the Sire of cow you intend to breed
  • The Inbreeding Report will calculate the inbreeding coefficient
  • Ideally, avoid matings with an inbreeding figure above 6.25%
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Bull intended for mating not found
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Sire of cow intended for mating not found
Safe Mating
Inbreeding Alert
Bull intended for mating and/or Sire of cow intended for mating not found.
Note: only official New Zealand AB Codes can be used in the inbreeding Report.
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