World Wide Indexes: meeting dairymen’s needs the world over

WWS recognises that dairymen use different criteria to select service sires, based on their own economic and breeding philosophy goals. WWS has created their indexes to help producers refine their selection of bulls from the WWS portfolio to best meet their breeding objectives.

The FertilityPRO designation identifies sires with semen that will likely improve pregnancy rates. This designation is assigned by examining industry service sire conception rate values, along with intensive in-house semen quality evaluations.
®FertilityPRO is a registered trademark of Select Sires Inc.

The Elite Sexed Fertility icon designates sires that can help you achieve the highest sex-sorted semen conception rates, enhancing your return on investment! This innovative designation distinguishes our highest performing sires for sex-sorted semen in both 2M and 4M products.The Elite Sexed Fertility icon designates sires that can help you achieve the highest sex-sorted semen conception rates, enhancing your return on investment! This innovative designation distinguishes our highest performing sires for sex-sorted semen in both 2M and 4M products.
Elite Sexed Fertility is a trademark of Select Sires Inc.

World Wide Sires has identified sires that transmit the desired traits for robotic milking systems. These sires were selected by focusing on component and milk yield, milk quality, udder health as well as functional udder traits. Use these sires to create the next generation of profitable cows for your specific milking system.
®RobotPRO is a registered trademark of Select Sires Inc.

GForce indicates sires with elite genetic evaluations based on a combination of traditional pedigree data and genomic data, but does not contain actual daughter data. This combination of data increases the reliability of a young sire’s genetic prediction prior to the availability of actual daughter data.
GForce is a trademark of Select Sires Inc.

The GForce+ lineup includes genomic young sires selected based on rigid semen quality standards and their high-ranking Sire Conception Rate (SCR) from progeny test semen usage. GForce+ sires must have outstanding genetic merit, a highly reliable sire stack and actual calving ease observations.
GForce+ is a trademark of Select Sires Inc.