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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.


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


WWS is proud to introduce IMAGE (Inbreeding Management and Genetic Excellence), an innovative tool that allows modern dairy producers to manage inbreeding effectively and easily across their herd.


Trouble free cows that convert feed into milk at high levels are profitable cows. With rising feed costs, dairy farmers around the world are looking for ways to improve efficiency to increase profitability. Breeding for optimum efficiency is the primary objective of OptiFeed. By using OptiFeed Bulls, dairymen can breed cows that will increase their farms profitability.


RoboMaxx identifies bulls that specialize in producing daughters who perform well with minimal management and Robot Milkers.

RoboMaxx focuses on sires that transmit high milk, fat and protein production, correct teat placement with adequate teat length, excellent feet and legs, and low somatic cell scores. By using these sires you can create the next generation of profitable cows for your specific milking system.


August 2015
Proof Data

Please click here
to see available reports.

World Wide Sires April 2015 Holstein Catalog

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Click on Image Above to View the
April 2015 Holstein Catalog
World Wide Sires April 215 Jersey Brochure

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to Download PDF or
Click on Image Above to View the
April 2015 Jersey Genetics Brochure
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Showcase Selections

View The World Wide Sires

January 2013 Showcase Selections

January 2013 Showcase Selections