Sire Fertility


Consistently Create Pregnancies

GENEX offers you two state-of-the-art tools for choosing high fertility sires that consistently create pregnancies: PregCheck™ and PregCheck+™ rankings. These sire fertility ranking systems, based on farm breeding and pregnancy data, are available so you can make more informed sire selection decisions and achieve higher conception rates.

Photo of cow with tags on its ears
  • PregCheck™ rankings indicate the fertility of a sire’s conventional semen.
  • PregCheck+™ rankings indicate the fertility of a sire’s GenChoice™ sexed semen.

How the rankings work

Higher numbers indicate a more desirable fertility level, with each point providing a 1% conception advantage. For instance, expect a bull with a 102 PregCheck™ ranking to have a 2% conception rate advantage over a sire with a 100 PregCheck fertility ranking. Rankings are published once they reach the 70% reliability level.

See how sires rank

PregCheck and PregCheck+ ratings are updated monthly. For the most up-to-date rankings – and full genetic evaluations – download the GENEX Dairy Bull Search App!

Commitment to quality

High-fertility genetics are part of the GENEX commitment to offering you a quality product, and it’s been a long-term commitment for us. Recognizing the importance of sire fertility, GENEX began publishing rankings – called GenCheck – in 2006. In 2013, that ranking system was replaced by PregCheck™ and PregCheck+™ rankings providing you with quicker access to more accurate fertility ratings on bulls.

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