INDEX OF SIRES
INDEX OF SIRES
OF
sold by World Wide Sires, Ltd. or its affiliates to a buyer shall not be used other than as authorized by the terms and conditions in the sales invoice. Each conventionally processed semen straw (not sex sorted) shall be used only for insemination of a female bovine. ALL OTHER USES OF BOVINE SEMEN FROM WORLD WIDE SIRES, LTD. AND ITS AFFILIATES ARE STRICTLY PROHIBITED WITHOUT THE PRIOR WRITTEN CONSENT OF SELECT SIRES INC. INCLUDING (WITHOUT LIMITATION) GENOTYPING, SEQUENCING, CLONING, GENETIC ANALYSIS, GENETIC MANIPULATION OR FOR RESEARCH. World Wide Sires, Ltd., Select Sires Inc., its member cooperatives, its agents or employees cannot and do not guarantee the conception rate, gender, quality or productivity to be obtained in connection with the use of its products or recommended techniques. There is no guarantee or warranty that the bulls marketed do not carry any unknown or undesirable genetic defects, haplotypes and/or recessives. It makes no warranties of any kind whatsoever, expressed or implied, which extend beyond the description of its products and hereby disclaims all warranties of merchantability and fitness for a particular purpose. In the unlikely event that any of our products shall be proven to be defective, Mèreages resulting from their use shall exclude consequential Mèreages and be limited to the purchase price of the product.
Limitations and Conditions of Sale: gender SELECTed semen shall be used only for the single insemination of one female bovine during natural ovulation with the intent to produce single offspring unless specifically approved on an individual customer basis by Sexing Technologies in writing. As a condition of purchasing gender SELECTed semen, the purchaser agrees that gender SELECTed semen will not be reverse sorted or re-sorted unless specifically permitted, in advance, on a case-by-case basis by Select Sires in writing. Select Sires intends to monitor the use of the gender SELECTed semen and vigorously enforce these restrictions on use. Please see http://www.selectsires.com/designations/genderselected.html for additional details.
The genetic evaluations contained within this report, unless otherwise noted, are provided by the Council on Dairy Cattle Breeding as the steward of the National Cooperator Database. The National Cooperator Database houses producer-owned yield, management, ancestry, type, and genotype data for the use in genetic evaluations and independent research. Data included in the National Cooperator Database is submitted through certified organizations for data quality and integrity. As such, individual traits along with Lifetime Net Merit $, Cheese Merit $, Fluid Merit $, and Grazing Merit $ - are Powered by CDCB, unless otherwise noted such as Holstein type traits. For more information about evaluations Powered by CDCB and the industry collaboration that fuels them, visit https://uscdcb.com/ cdcb-marks/
Holstein cover photo: Wayne & Patti Wagner & Family, Mountainview Dairy, Winnaleah, TAS; Photo by Brad Cullen. Jersey cover photo: Greg & Leesa Bryce, Green Pines Jerseys, Nullawarre, VIC; photo by Amy Wright
K & M Brereton, Isycoed Jerseys, Gunbower Island, Victoria; photo by Amy Wright
MILKING SPEED (MSPD)
Now Available For Holstein Males and Females
42% HERITABILITY
58% RELIABILITY (YOUNG GENOMIC BULLS)
67% RELIABILITY (PROGENY-TESTED BULLS)
The Milking Speed selection trait, abbreviated MSPD, is available for Holstein males and females starting in August 2025. The MSPD predicted transmitting ability (PTA) represents the average pounds of milk per minute expected of an animal’s offspring in a herd with average management conditions using a conventional milking system.
That means a bull or cow’s PTA value is the actual pounds of milk per minute their offspring is expected to produce, averaged over a 305-day record. At 42% heritability, MSPD is the most heritable trait of any of the 50 that the CDCB publishes.
The approximate average is 7 pounds per minute in U.S. Holsteins. For example, daughters of a Holstein bull with a MSPD PTA of 8 lbs/min would be expected to milk faster than the average cow in the population. Conversely, daughters of a Holstein bull with a MSPD PTA of 6 lbs/min would be expected to milk slower than average.
MSPD evaluations are developed using milking time and yield information reported from inline milk meters in traditional parlor systems. This differs from MSP evaluations produced by CDCB for the Brown Swiss and Milking Shorthorn breeds and several international milking speed evaluations, which are calculated based on producer-reported perceptions of milking speed that are collected during type classification.
To eliminate the human factor of milking speed reporting and improve the accuracy of results, USDA’s Animal Genomics and Improvement Laboratory (AGIL) and the Council on Dairy Cattle Breeding (CDCB) performed a study on how data from in-line milk meters could be used to calculate reliable genetic evaluations for milking speed.
It is important to note that the trait does not apply to automatic milking systems (AMS) at this time.
In addition to moving more cows through the parlor, selecting for faster-milking cows (or selecting against slower-milking cows) will create a more consistent herd and limit the disruptions that cows requiring special attention in the parlor can create.
BENEFITS OF THE TRAIT:
1. Faster-milking cows can be selected for, allowing more cows to be milked through the parlor in the same period of time.
2. Slower-milking cows can be selected against, improving herd consistency and limiting disruptions to the milking routine.
3. Greater parlor throughput is a more efficient use of labor and facilities.
WHAT MAKES IT UNIQUE:
1. Objective measurement
2. Utilitzes in-line sensor technology
3. Standardized across data sources
4. Expressed in pounds-per-minute
UNDERSTANDING THE SIRE INFORMATION IN THIS CATALOGUE
See page 6 for descriptions for each of these designation icons. Bulls must meet certain criteria to receive each individual designation.
The coloured graphs for Indexes, Production and Health & Fitness depict the key traits for a bull in relation to the reference population. Bulls are compared to all active and genomic bulls. The longer and darker the graph, the higher the bull ranks in the breed. Each shade represents a breed quartile.
Scan these boxes with your smartphone’s camera and you will be linked to more information on this particular bull.
(2025, July 17). uscdcb.com/milking-speed Novel Milking Speed Trait is Highly Heritable. Hoard’s Dairyman. (2025, June 23). hoards.com
CALVING TRAIT UPDATES EXPLAINED
On August 12, 2025, calving traits calculated by CDCB for Holstein and Brown Swiss will undergo both a phenotypic and genetic base change. This comes after the routine five-year base change was delayed for the April 2025 evaluations following unanticipated results. Further investigation has validated the initial calculations.
In the calving ease and stillbirth evaluations a sire-maternal grandsire threshold model is used, where outputs are expressed in terms of probabilities or frequencies of difficult calvings (or stillbirth). In this model, the observed calving difficulty (or stillbirth) is understood as a combination of two factors: genetics (which we aim to improve through selection) and environment (management factors such as feeding and gestation practices). Environmental effects are incorporated into the final PTA because, for example, sires’ daughters calving in a“poor” environment will generally experience more difficult calvings, while daughters calving in a “good”environment will tend to have easier births.
As this average approaches zero, PTA variability has decreased as a consequence. The low incidence of reported dystocic calvings naturally constrains PTAs since values below 0% are biologically impossible. Now is not the time to become lax in selection criteria for SCE, but producers should not be alarmed if minimal variability is seen across bulls in the population.
The calving traits differ from most other traits that CDCB evaluates because they are categorical and not continuous –a cow either experiences dystocia or not; there is nothing in between.
Sire Calving Ease (SCE)
Predicts the tendency of service sires to produce offspring that are delivered easily, expressed as the percentage of births of bull calves coded “difficult” for first calf (primiparous) heifers compared to other A.I. bulls born in the reference year. Beginning in August 2025, this is set to 2020.
Daughter Calving Ease (DCE)
Predicts the tendency of the daughters of sires to have offspring that are delivered easily, expressed as the percentage of births of bull calves that are “difficult” in first calf (primiparous) heifers compared to other A.I. bulls born in the reference year. Beginning in August 2025, this is set to 2015.
The Data That Supports Calving Traits
Sire Stillbirth (SSB)
Predicts the tendency of service sires to produce offspring that are stillborn (dead at birth or within 48 hours of birth), expressed as percent compared to other A.I. bulls born in the reference period. Beginning in August 2025, this is set to 2020.
Daughter Stillbirth (DSB)
Predicts the tendency of the daughters of sires to have offspring that are stillborn (dead at birth or within 48 hours of birth), expressed as percent compared to other A.I. bulls born in the reference period. Beginning in August 2025, this is set to 2015.
Calving traits are calculated using producer-recorded data stored in farm software, processed at a Dairy Records Processing Center, and shared with the National Cooperator Database.
Current (old) phenotypic base
From April 2020 to April 2025, the old phenotypic base consisted of the average calving difficulty on first parity cows for bulls born in 2015 (SCE, 2.29%) and maternal grandsires born in 2010 (DCE, 2.71%)
August 2025 (new) phenotypic base update
The upcoming phenotypic mean (the new phenotypic base) will shift to the average calving difficulty of first-parity cows for bulls born in 2020 and maternal grandsires born in 2015, which will be approximately 1.36% and 1.76%, respectively.
DESIGNATIONS WWS
GrazingPRO® sires improve the profitability of grass-based production systems by transmitting greater longevity, improved mobility, moderate stature, greater component yields and superior production - all while not compromising Daughter Pregnancy Rate (DPR) and Somatic Cell Score (SCS).
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.
The GForce+™ lineup includes genomic young sires with selection 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.
gender SELECTED™ This icon identifies sires with sex-sorted semen available. More heifers is not out of reach with our research-backed genderSELECTED sires. All genderSELECTED semen is processed using Ultraplus technology.
gender SELECTED 4M™ Look for the genderSELECTED 4M icon to identify sires with sex-sorted semen available in 4 million sperm doses. All genderSELECTED semen is processed using Ultraplus technology.
Elite Sexed Fertility™ 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.
RobotPRO® sires 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.
®
Mastitis ResistantPRO® Sires which excel in multiple indicators of mastitis resistance are more likely to deliver genetic improvement. Mastitis ResistantPRO™ uses a combination of CDCB Mastitis Resistance, CDCB Somatic Cell Score (SCS) and Zoetis Mastitis Resistance.
FeedPRO® optimises the selection for increased production and moderate body size while maintaining body condition score & daughter fertility. This revolutionary index designates sires with the genetics to improve income over feed costs & maintain health and reproductive traits.
The FertilityPRO® designation identifies sires with semen that will likely improve pregnancy rates. This designation is assigned by examining industry service Sire Conception Rate (SCR) values, along with intensive in-house semen quality evaluations.
If you want the most reliable sires available for your breeding programme, look for the Progeny Proven icon. This lineup designates sires with an evaluation based on both genomic data and actual daughter performance data.
The goal of Select Sires’ NxGEN® program is to provide genetic advantages to dairy producers who are looking for next-level genetic gains. By joining and accepting the terms and conditions of the NxGEN program, members will have earlier access to our most elite genetics, which are widely respected in today’s genomic world, and the ability to capture breed-leading genetic trends like never before.
Calving Ease Sires that can be used with confidence for easier calvings, the lower the calving ease score the easier the expected calvings.
Sires earn the SHOWCASE™ designation through outstanding breed-leading Type or show-winning pedigrees. Turn to this designation to produce your next show winner or improve the overall type in your herd.
SCAN HERE FOR A COMPLETE GLOSSARY OF GENETIC TERMS
ComponentMAXX Sires are selected to maximise total milk solids and concentration of butterfat and protein percentages.
GBG Bulls that appear with the GBG logo, and that bulls current BPI, meet strict reliability levels and are considered by DataGene to be amongst the best in the breed. These bulls will also appear in searches on the GBG App.
ALL HERDS HAVE A RANGE OF GENETICS AND PERFORMANCE WITHIN A HERD.
Your top end cows are making you money and carrying the poor performers at the bottom.
This example from Ellinbank Research Centre identified these opportunities:
Ellinbank Top 25% BPI cows achieved:
• +32 kg Fat per year
• +34 kg Protein per year
• +329 liters milk per year
• Became pregnant 61 days earlier
by
photo
Amy Wright
THE POWER OF POLLED GENETICS
A new generation of Polled sires is here, and they’re leading the way for genetic profitability! Select Sires/WWS offers the most complete, competitive and profitable lineup of Polled sires in the industry. Maximize your herd’s genetic potential while adding Polled genetics to your herd.
Genetic progress equates to greater economic sustainability.
Select Sires’ Herd Health Profit Dollars® (HHP$®) is the premier index to achieve your dairy’s financial goals. It is designed to create healthier, longer-living cows to support your herd’s inventory strategy without sacrificing genetic gains.
More pounds of fat and protein from fewer cows equates to more lifetime profit per cow.
TROUBLE-FREE AND LONGER-LIVING
Reduce death loss and involuntary culling to align with replacement inventory strategies and spend less time and money treating sick cows. 9%
CONFORMATION THAT COUNTS
Leverage the conformation traits that create easy-to-milk, easy-to-manage, balanced cows. 15%
By improving pregnancy rate from 19% to 25%, herds can increase profit by $49 per cow per year. 12%
IMPROVE FEED EFFICIENCY
Moderate body size and improved feed efficiency means less feed and less water per pound of milk. 2%
STRENGTHEN MASTITIS RESISTANCE
Incorporate genetic solutions to safeguard against mastitis while improving milk quality. 13%
Weightings reflect the Holstein HHP$ formula as of April 2025. Sources: Mostert et al., 2019; Briggs, 2022; Cabrera & Cordoba, 2022.
CAPTURE GENETIC TRENDS like never before!
“We became a member of the NexGen program to be able to maximise our genetic growth in the herd, and by doing that, create a healthier and more productive herd to remain profitable in the future.”
Coenraad Basson, Uilenkraal, Darling, South Africa
The goal of Select Sires’ NxGEN program is to provide genetic advantages to dairy producers who are looking for next-level genetic gains. By joining and accepting the terms and conditions of the NxGEN program, members will have earlier access to our most elite genetics, which are widely respected in today’s genomic world, and the ability to capture breedleading genetic trends like never before.
DWP$®
DWP$ Dairy Wellness Profit Index®:
A multi-trait selection index that includes production, fertility, type, longevity, and the wellness traits, including Polled test results with unique formulas used for Holsteins and Jerseys Holstein Cow Wellness Traits Calf Wellness Traits Production Fertility BWC and RFI Longevity, Milk Quality & Calving.
DWP$ DAIRY WELLNESS PROFIT INDEX
• A MULTI-TRAIT SELECTION INDEX
• INCLUDES PRODUCTION, FERTILITY, TYPE, LONGEVITY AND THE WELLNESS TRAITS, INCLUDING POLLED TEST RESULTS
PRODUCTION
COW WELLNESS
LONGEVITY, MILK QUALITY & CALVING FERTILITY
BODY WEIGHT COMPOSITE & RESIDUAL FEED INTAKE CALF WELLNESS
COW WELLNESS
LONGEVITY &
THE SCIENCE BEHIND THE STRATEGY
RobotPRO identifies sires that transmit the desired traits for robotic milking systems. These sires are selected by focusing on components and milk yield, udder health, longevity and durability, as well as functional udder traits.
“Select Sires is continually reviewing designation criteria to meet the evolving needs of dairy farmers. In August 2024, the formula was updated to include Canadian evaluations for Udder Floor and Milking Temperament. Cows with extreme reverse tilt make it difficult for robot sensors to locate rear teats. We’ve also heard the concerns from dairy farmers regarding nervous cows. They require more time for the robot to attach the units and more time for re-attachments. Adding consideration for these traits will improve the usefulness of this designation in dairies around the world.”
– Chuck Sattler Vice President of Genetic Programs, Select Sires Inc.
YOUR SOLUTION FOR AUTOMATED MILKING SYSTEMS
Offspring will be robot-reliable Geared toward critical robot management factors Formulated with an emphasis on health and wellness RobotPRO assures correct Rear Teat Placement and Teat Length for your robots.
CCR CE
CCR (Cow Conception Rate)
Lactating cow’s ability to conceive defined as a percentage of inseminated cows that become pregnant at each service; a CCR of 1 implies that daughters of this bull are 1% more likely to conceive when inseminated than daughters of a bull with an evaluation of 0.
SCE (Sire Calving Ease)
Sires that can be used with confidence for easier calvings, the lower the calving ease score the easier the expected calving. Currently 2.3 SCE is considered breed average. Listed below are some of our most elite SCE bulls, with plenty more identified within the directory.
SCR
SCR (Sire Conception Rate)
Sire Conception Rate is not a genetic trait. SCR measures the semen fertility of a bull. An SCR of +1.0 indicates a 1% increase in conception rate when compared to the average sire.
photo by Amy Wright
FROM CALF TO COW
Our ear sensors monitor your dairy cows 24/7, in real-time. Track your cows throughout every life phase. Monitor your herd’s health with our lifetime ear sensor.
Scan the QR code to learn more.
Our ear sensors monitor your dairy cows 24/7, in real-time. Track your cows throughout every life phase. Monitor your herd’s health with our lifetime ear sensor.
Scan the QR code to learn more.
ALADDIN-P
Dam: Ar-Joy Cu Drast Apple-P-ET
MGD: Ar-Joy Cu Drast Apple-P-ET VG-87
ASTRAGALUS
MGD: Guided-Path Jedi Aruba VG-88
Dam: Ar-Joy Cu Drast Apple-P-ET VG-87
BLUE VERVAIN
Lindenright Blakely Moca and Monarch
CANDY-PP
Paternal sister: S-S-I Extra-P 10564 2117-ET
CARLAN-PP
Sire: Siemers Hanan Hanx-P-ET
Sire: Pine-Tree Easton-ET
477
Sire: Blumenfeld Recharge-ET
MGD: Terra-Linda Excalibur May VG-88
Profit potential begins with a good strategy. Consider your source for genetics, fertility, calving ease and growth and terminal traits. ProfitSOURCE is aptly named to be a source of profit for your dairy. The program has been carefully crafted and curated to drive profit to dairy producers while meeting supply chain desires.
Your SOURCE for SUPERIOR FERTILITY
ProfitSOURCE sires have been selected to be used confidently to settle cows in your herd. The pack provides insurance that dairies will experience the consistent high fertility Select Sires is known for.
Your SOURCE for SUPERIOR CALVING EASE
ProfitSOURCE sires are selected for reliable Calving Ease with moderate birth weights.
Your SOURCE for SUPERIOR GROWTH & TERMINAL TRAITS
ProfitSOURCE sires are high marbling cattle selected for growth and carcass weight with desirable ribeye size and shape.
GLOWSTICK-S
Sire: S-S-I Earlybird Sundance-ET
HADES
7HO17131 COOKIECUTTER HAYK HADES-ET
HANSKE-P
HANTASTIC-P
HEATWAVE
HULLABALOO
Sundance-ET
Dam: Cookiecutter Hollyn-ET
MGD: Cookiecutter Slm Hoplite-ET VG-88
Stantons Ison Perfect It PP
KARMA-PP
Dam’s paternal sisters: Grass Ridge Luster-P daughters
MGD: Siemers Denver Paris-ET
PARJET
MGGD: Siemers Lmda
“Since partnering with the WWS Global Dairy Solutions team, we’ve gained invaluable access to the latest dairy technology skills, cutting-edge innovations, and best practices used in high-production systems.
The team has been highly supportive professionals, offering reassurance on our animal welfare practices while recommending small yet impactful adjustments that have significantly improved our welfare systems.
This collaboration has led to improved outcomes in our non-cycling program, reducing the number of carry-over cows, and optimizing our vaccination program to lower disease incidence and minimize milk production losses during vaccinations.
“
Victoria Mulcahy; Managing Director | Inionba Pastoral Pty Ltd. Kyvalley, Victoria
The PARFECTS have really developed into their 2nd lactation with huge increases in production. We believe they are going to make great high production and type cows!
We will continue to use him.
Madison & Cody Hibberd (pictured below)
Our PARFECTS are something special. Average PI 110. The three with PI’s over 125 are PTIC to recalve in less than 12 months.
We will definitely use him again.
Peter Fullerton
Brad Salmon
SATISFIED WITH PARFECT AND USING HIM AGAIN!
Photo by Victoria Mulcahy
I’m milking ten PARFECT daughters and am very happy with them. They have great udders and produce very well and will turn into great cows He is a bull that I will definitely use again.
PROVEN FULL
RACETRACK
RENEGADE
Sire: S-S-I Revltn Sensational-ET
SAHARA
SANBORN
7HO16966 OCD HAYK SANBORN-ET A2A2
4th dam: Cherry-Acres Jedi Lauri-ET VG-85
SOETEBIER-P
Sire: OCD Trooper Sheepster-ET
Dam’s paternal sister: Lars-Acres Maximus Newlynn GP-80
SUPPLEMENTARY BULLS
“
Working with WWS Advisors has certainly helped with correction of traits. The two main ones we started with were Mastitis and Feet & Legs, and we have seen a lot of improvement in these areas.
The cows have to do a fair bit of walking, and we are seeing a lot less lameness.
Working with WWS has been very good and they have some bulls that are working very, very well in the herd.
Wayne & Patti Wagner
Mountainview Dairy, Winnaleah, TAS
“
® HERE FOR YOU.
EXCLUSIVE-RED
RAGNAR-RED
MGD: Trent-Way-JS Redzone-Red-ET EX-91
Showbox Sires’
The Showcase program is anchored by tremendous maternal lines and delivers a sire lineup that will drive the genetic advancement of your herd for multiple generations while supporting your goals of creating Excellent cows. The lineup was built on the concept of balanced sires that excel in not only high PTAT values but are complete in all categories.
We value sires that have the right conformation but also improve health and fitness, add production and create the kind of cow that can thrive in any environment around the world. In our experiences, these attributes define a “crossover” sire. The term we use to decribe Showcase sires like 250HO12961 DOC who created the crossover standard nearly a decade ago.
Right: Clydevale Doc Cleavage-IMP-ET (VG-88), 250HO12961 DOC daughter and reserve intermediate champion and first place junior three-year-old, International Dairy Week, 2024, Clydevale Holsteins, Macorna North, VIC, Cowsmopolitan photo.
DROP N HOT
GENTLE BEAST
9AY00146 GRAND-VIEW GENTLE BEAST A2A2
Dam: Grand-View Dempsey Blackberry EX-94
Dam: Miss Malibu Mimosa
O’REILLY-P
9AY00150 PALMYRA O’REILLY-P
MGGD: Galney-EPC L.H. Rosy-ET EX-90 Dam’s paternal sister: Maple Star Blackjack Mercury
DETERMINATION
Family member: Kow Castle Slam Browny
CADET
MGGD: Hartdale Alstar Cutie EX-93
UNANIMOUS
Dam: Springhill Kojack Uno-ETV EX-96
VICTORIOUS
KCJF/Lucky Lady Dream-Taker-ET
Dulet Victorioua Bagel ET EX-95
Starlord daughter Hann Family, Lockington, Victoria
ODESZA
KAMAKAZI
Bar MB Kamakazi 26104
South African Kamakazi daughters
Family member: River Valley Craze Joy 7224 VG-86
MGGD: Goff Pharoah Circus Act-ET EX-90
JX CORONA {6}
Dam: JX Primus Fournette
MGGD: Goff Pharoah Circus Act-ET EX-90
MGD: JX Primus Fournette Cerys 560 {4}-ET VG-84
JX CERBERUS {6}
Dam: JX Primus Thrasher Cara 53632 {5}-ET VG-86
MGD: JX Primus Fournette Cerys 560 {4}-ET VG-84
MGGD: Goff Pharoah Circus Act-ET EX-90
GRADUATE
BIG RED
Dam: Suess Lexicon Rhonda EX-93
We have been using World Wides Sires Mating Program (WMS) for ten years
WWS has always provided a professional service, from individually scoring the cows, generating the list of preferred sires for our operation and to having WWS Global consultants providing international advice to our
& Leanne Smith; Yarrimbah Farms
Darren, Ray & Justin Smith
WWS AUSTRALIA TEAM
