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Welcome to World Wide Sires!

World Wide Sires, Ltd. is the world's leading cattle genetics marketing organization representing the majority
of the U.S. Artificial Insemination Cooperatives. In an atmosphere of trust and cooperation, World Wide Sires
brings together suppliers and customers to promote efficient global livestock production.


Who We Are

Click Image Above to
View the October 2015
Holstein International Article
About World Wide Sires
Holstein Catalog

Click Here to Download PDF
or Click on Image Above
to View April 2016
Holstein Catalog

April 2016 Wellness Traits

Global Impact

Click Here to Download PDF
or Click on Image Above
to View Global Impact
Other Languages

April 2016 Proof Data

Please click here
to see available reports.

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Click on the logos below to get a complete list of sires that qualify for each designation.


CowManager:  More Milk. More Money.

The smart sensor
24/7 monitoring all in the cows ear

  • Easy to install and maintain
  • Monitors heat detection and health
  • Better information for better results
  • Maximize reproduction and minimize health issues

Click to learn more