The release of the April 2025 Genetic Evaluations brought another exciting day for the STgenetics® sire lineup. STgenetics® is very humbled to be home to the top genetics in the global dairy industry and is proud of our company's commitment to creating profitable, sustainable dairies through genetics and technology combined.
Base Change
With the release of the April 2025 Genetic Evaluations, the Council on Dairy Cattle Breeding (CDCB) released an industry wide base change, a process that occurs every 5 years. Additionally, the NM$ and TPI formulas were adjusted to account for new economic values within the formulas.
At a glance, to compare the December 2024 genetic evaluations to April 2025, a +1300 NM$ animal would now be a +931 NM$ animal, a +3300 TPI animal would now be a +3385 TPI animal and a +200 CFP animal would now be a +140 CFP animal.
STgenetics® has broken down the changes and adjustments made within this base change. For a more detailed look at these revisions, visit here: https://www.stgen.com/article/article.aspx?language=english&code=13051
Proven Sires
The Global Genetic Leader and History Maker, CAPTAIN was once again the top TPI sire on the Top 100 International TPI® Bull List provided by Holstein Association USA, an unprecedented feat he has now achieved this title for the 8th consecutive proof run. Jumping an impressive +105 TPI points to +3441 TPI, CAPTAIN continues to solidify his genetic legacy as a true industry Legend™! Now with over 9,000 daughters, CAPTAIN is +1872 lbs Milk +123 lbs Fat +64 lbs Prot, +3.7 PL and A2A2. He also held strong in Canada at +3816 GLPI and +2687 PRO$.
Once again, GARZA came in right behind his sire, CAPTAIN at +3418 TPI. GARZA brings a lot of diversity to the breeding table on top of excellent production traits +1686 lbs Milk +141 lbs Fat +54 lbs Prot. GARZA, a robotic designated sire is +1140 NM$ and +1163 Eco$.
DELUXE also made gains in TPI moving up 140 points to +3306 TPI. At +1581 lbs Milk, +131 lbs Fat, +54 lbs Prot and +1.16 PTAT. This robotic sire is also +845 NM$, +1031 Eco$ and A2A2. ON-DUTY had another strong day coming in at +3286 TPI and this Balanced Breeding sire is delivering performance, health and Feed Conversion Efficiency being +4.7 CCR +1.3 Liv and +2.6 PL. ON-DUTY is A2A2, +1.92 PTAT and +2.29 UDC and EcoFeed®cow designated for Feed Conversion Efficiency in lactating cows.
The Balanced Breeding sire JOHNBOY continued his consistent ways on the Top 100 Holstein Bulls by LPI from Lactanet. JOHNBOY held steady through a base change and formula change on the LPI list at +3827 GLPI while adding impressive daughters to his proof. JOHNBOY is also +2892 PRO$, +115 kg Fat and +.59%, +88 kg Prot and +.38% and is +10 Conf.
New Proven Sires
Joining the ranks of Proven sires this April is the COWEN son, THORSON. A former top GTPI sire, jumped 173 TPI points to come in at an impressive +3389 TPI on the Top 100 International TPI® Bull List. THORSON is +137 lbs Fat +.29% +60 lbs Prot +.05%, +3.3 PL +.9 CCR & A2A2. He is out of a CHARL daughter, then the DIRECTOR daughter, Mormann DIRECTOR 56713-ET who is backed by the proven Delicious bloodlines.
LEVOY, another CAPTAIN son, also made his debut on the Top 100 International TPI® Bull List at +3257 TPI. He is +116 lbs and .26% Fat and +968 NM$. He also excels in health traits being +3.0 PL and +.7 Liv. LEVOY is also +1152 Eco$ and is and EcoFeed®plus sire for Feed Conversion Efficiency from heifers to lactating cows.
Genomic Sires
The future looks bright for STgenetics® young sires following the release of the April 2025 Genetic Evalutions, where many held strong on the Top 200 TPI® Genomic Young Bulls list from Holstein Association USA. RIPCORD led the way at +3537 GPTI, ABAY was next at +3526 GTPI, DARTH VADER followed closely at +3504 and YESTERDAY was +3491 GTPI. Additionally, the High Ranking TPI Genomic Young Bull list shares a glimpse into the exciting and promising future of the Holstein portfolio with the top 20 bulls coming from the STgenetics® program.
New Sires
Following the April 2025 Genetic Evaluations, STgenetics® released a total of 17 new sires; 14 Holsteins, 2 Jerseys and 1 STamina™ sire. The Holstein sires averaged +3344 TPI, +983 NM$, +1094 Eco$, +152 CFP, +52.5 lbs Prot, +4.05 PL, +1.05 LIV and +.97 CCR. All of the new release bulls are available in Ultraplus High Purity™, 13 of the 14 new Holstein sires are A2A2 and this group hails from 10 different sires.
Eco$
Additionally, STgenetics® continues to push the industry norms with the continued investment in the industry’s first sustainability index, Eco$. Backed by the largest evidence-based Feed Conversation index in the world, EcoFeed® from STgenetics®, Eco$ brings the synergy between sustainability and productivity, creating the simplicity dairy producers have been asking for to make logical genetic decisions, paving the way for a more efficient and environmentally conscious herd.
Leading the way among the Eco$ sires at STgenetics® this sire summary is FORDON at +1270 Eco$, YESTERDAY +1265 Eco$, MIDDLETON at +1265 Eco$, DARTH VADER at +1264 Eco$, and BOGART at +1259 Eco$.
For more on Eco$: https://stgen.com/article/article.aspx?code=9645&language=english-english&category=104
Colored Breed Sires
STgenetics® colored breed lineup also had a strong day following the April 2025 Genetic Summary. The three new release Jersey sires are GORMAN, OLEY and PHILO. At +172 JPI, GORMAN is among the top 25 in the breed for JPI and the top STgenetics® Jersey sire for JPI. This GARLAND son has a really balanced profile as he's +18.9 for JUI +0.6 PTAT +874 lbs of milk, +44 lbs Fat, +33 lbs Prot, +3.5 PL and +1.5 CCR.
The next new graduate is OLEY. At +162 JPI, +17.3 JUI and +.9 PTAT, +88 CFP, OLEY brings a balance of type and production to Jersey breeders. He is full brother to STgenetics® JPI leaders OZONA and ORLAND. PHILO is +149 JPI, +857 lbs Milk, +484 CM$, +3.7 PL, +2.6 CCR and +1.2 DPR. Both OLEY and PHILO are A2A2 and BB. All in all, the STgenetics® Jersey lineup has 12 bulls over +450 CM$.
TESLA is the PPR leader of the STgenetics® Brown Swiss program at +152 PPR. He is also the highest milk sire in the STgenetics® Brown Swiss line up at +1449 lbs Milk. At +151 PPR, JOEY brings production and health being +1094 lbs Milk, +110 CFP and +2.6 PL.
Located in Navasota, Texas, STgenetics® is making the world greener, more sustainable and profitable. By improving herd genetics through science and technology, we believe that the best way to predict the future is to create it, while feeding the world with our passion for the beef and dairy industries. The STgenetics® Integrated Approach to management combines cutting edge genetics, innovation driven programs and gender-sorted semen to aid farmers in improving cattle performance to feed the world while reducing their carbon footprint.
To view full information in PDF format, please click blue button "Open File" below.