Company News


Launched in January 2014 in the US, SemexWorks™ is proving to be one of the most innovative, user-friendly and individualized technologies ever taken on dairies.

“We really think this is the way it should be,” says Paul Krueger, Semex Director, Sales and Business Development, USA. “Semex clients are using their own economics and calculating the return on investment of their genetic decisions. No one else can offer this service and it underscores our commitment to bringing our clients tools as individualized as they are.”     

SemexWorks is an easy-to-use, touch-based tablet software that truly puts the client in the driver’s seat, by selecting the traits, strategies and economic parameters that are important to him. This results in a personalized selection formula that fits their unique criteria. After identifying key traits that are important to the dairy, bulls are given a client index value based on the areas the client emphasizes, the weightings placed on traits and also herd segmentation. This provides a bull listing that is easy to navigate and ranked on individual breeding goals by herd segment.

“Our double-digit growth is directly attributed to Semex being the industry’s only fully integrated AI company,” says Krueger. “We’re delivering solutions that have real meaning and value. This includes Immunity+™, Semex ai24™, as well as a diverse and powerful lineup. And now with SemexWorks, we’ve simplified the buying process, and given our clients confidence that their genetic decisions are right for their economics and goals. In 2016 we’re looking for another exciting year, working shoulder-to-shoulder with more and more dairymen from coast to coast.”

For more information on Semex, SemexWorks, Immunity+, Semex ai24 or any of Semex’s suite of solutions visit

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Semex's Immunity+: Three Years Later Dairymen Reaping Benefits

Three years after the launch of Immunity+ sires, dairymen worldwide are reaping the benefits of Semex’s exclusive technology.

Developed by Dr. Bonnie Mallard and her colleagues at the University of Guelph, the research surrounding the HIR (High Immune Response) technology that Immunity+ is based on spans decades, includes over 100 published papers and is 30% heritable.

“No other product or solution available has this, or is 30% heritable with immediate effects… This starts at birth, there’s no wait,” says Paul Krueger, Semex Immunity+ Global Brand Manager. “We hear every day how dairymen are benefitting from this technology.”

“When Semex asked me to start tracking our calf care and treatments, those calves that didn’t get sick were always Immunity+ calves,” comments Nate Bennet, Herdsman at Schwab Dairy Farm, a 1,000-cow dairy in Delevan, NY. “During the winter, our heifer pens in the pack barn can be up to 50% overcrowded. In the last year, we’ve only treated three heifers for pneumonia, a huge decrease from years past.”

In December 2015 Semex has:

46 Genomax Immunity+ bulls over +2300 GTPI
39 Genomax Immunity+ bulls over +2400 GTPI
14 Genomax Immunity+ bulls over +2500 GTPI
Two new Jersey Immunity+ bulls:

0200JE00193 Buttercrest Standing
0200JE00180 Ertl Mantra

For more information on Semex, Genetics for Life, Immunity+, Genomax sires or any of Semex’s brands visit: 
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Semex's Genomax Program Success Continues

Semex’s Genomax program continues to be one of the most successful genomic sire programs worldwide, delivering and graduating some of the world’s most in-demand and profitable sires.

Leading the list of graduates in December is the new #12 High Ranking Sire at +2456, 0200HO02792 Sandy-Valley Saloon. A2A2™ sire Saloon brings excellent production and type traits to the table. No other sire in the top 20 can offer a complete package of +2217 PTAM, +143 combined Fat & Protein and +2.20 PTAT.

Also added was the breed's leading *RC sire, 0200HO02828 Dymentholm S Sympatico *RC, at +2371 with +1773 PTAM, great +73 lbs Fat, +4.2 PL, low 2.89 SCS and solid type. He's a Repromax™, HealthSmart™, Calving Ease™, Robot Ready™ and Red & White™ sire.

Never stronger, our Genomax lineup has over 125 active Holstein sires including 110 over +2300 GTPI, 92 over +2400 GTPI, 47 over +2500 GTPI, 55 over 2.0 DPR as well as impressive averages of +595 NM$, +4.6 PL and over +2.00 PTAT from 43 different sires and 36 different maternal grandsires!

Topping this list:

0200HO10442 Sandy-Valley Afterburner: #1 Flame son at +2662 GTPI with great health traits of +5.3 PL, 2.72 SCS, 2.5 DPR, solid +2.13 PTAT. This HealthSmart and Robot Ready sire’s dam is a Mogul from VG-87 Amethyst, from VG-87 1* Planet Sapphire
0200HO10397 Stantons Draftpick: Early Main Event son at +2658 GTPI, with a +5.8 PL, 2.9 DPR, 5.6 CE, solid +2.15 PTAT and +767 NM$. This HealthSmart, Robot Ready and A2A2™ sire is from a VG-85 Mogul x extremely profitable vein of the Saturday family
0200HO10314 Zahbulls Governor: High-ranking Flame son at +2656 GTPI, offers an extremely low 2.53 SCS, 4.4 DPR with +2.22 PTAT and +2.21 UDC. From the same family as 1st Class, Governor’s dam is a VG-86 Supersonic then the popular Dorcy Glamour and nine more generations of VG and EX seedstock dams! He is a HealthSmart, Robot Ready and ... Read More...

The #takehomebrenda Winner Is...

Nearly 900 dairymen from coast to coast entered in Semex’s #takehomebrenda draw for a high GTPI Immunity+ sired daughter while at World Dairy Expo (WDE). Sired by 0200HO06639 Stantons Pulsar, give-away calf Pulsar Brenda is +2569 GTPI, ranking her in the top 1% of the breed.

Dean Meinholz of Blue Star Dairy Farms, DeForest, Wisconsin is the winner of Pulsar Brenda. Blue Star Dairy is home to 2500 cows on three locations, has over 4000 acres of land and averages over 90 lbs milk/cow/day. Family owned and operated for several generations, is a family partnership on three locations north of Madison, Wisconsin. The original dairy in Middleton milks 470 cows and raises its own replacement heifers. The DeForest farm milks 800 cows and the Arlington farm milks 1200 cows. Congratulations to the Meinholz family!

“We’re excited that Pulsar Brenda is going to such a great home. Blue Star is a modern, family operation that raises their own replacements and knows the value of healthy calves and heifers,” says Paul Krueger, Immunity+ Global Brand Manager and Director, Sales and Business Development, United States. “At World Dairy Expo people were eager to not only register for the calf, but to find out what kind of economic impact Immunity+ can have on their own herd. It’s a completely unique trait and at 30% heritability, it’s an easy decision to use. Our customers are telling us that in both their milking in heifer herds they’re seeing less mortality, diseases, lameness and more. Immunity+ is making a difference.”

Semex thanks all those who visited the Semex Tent and WDE and entered to win. If you would like to find out more about Immunity+ or any of Semex’s suite of solutions, ask your Semex Representative or visit

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See The Difference Semex's Immunity+ Makes At WDE & Win Your Own Immunity+ Sired Calf!

With the recent news showing that Semex’s patented Immunity+™ is now 30% heritable, the industry’s focus on disease resistance and Semex has never been greater.

At World Dairy Expo (WDE), Semex is encouraging visitors to stop by the Semex Tent and see for themselves how Immunity+ can make a difference in their own herds’ health through less disease, fewer reproductive problems and reduced culling.

“We see a huge benefit for our customers, especially with the reliability now at 30%,” says Paul Krueger, Immunity+ Global Brand Manager and Director, Sales and Business Development, United States. “Real world data in both milking and heifer herds show less mortality, diseases, lameness and more. The economic value associated with this is significant, and we’re anxious to share it with clients at the Semex Tent.”  

“But maybe more exciting, is what we consider to be the best offer we’ve ever had at WDE,” says Krueger. “Semex is giving away a high GTPI Immunity+ sired daughter. Entry is easy, and you get a free hat while supplies last. You just can’t go wrong with an offer like this!”  

WDE visitors are encouraged to visit the Semex Tent and enter to win Pulsar Brenda, an elite 0200HO06639 Stantons Pulsar daughter that ranks in the top 1% of the breed for GTPI at +2569.

Also on display will be daughters of the following popular Immunity+ sires:

0200HO07450 Amighetti Numero Uno
0200HO00560 Monument Impression
0200HO03753 Marbri Facebook
0200HO02714 Springway Celebrate

To find out more about Immunity+ or any of Semex’s suite of solutions, stop by the Semex Tent at WDE or by visiting

If you can’t be with us at this year’s WDE, we encourage you to follow Semex on Facebook, Twitter or Instagram and search #semextent and #takehomebrenda for all the latest news from Semex at the show! 
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Semex Announces Immunity+ Now 30% Heritability

As the only company offering immune genetics for greater disease resistance, Semex is excited to announce that dairymen everywhere can feel even more confident in Immunity+™ as recent studies show heritability to be 30%. “This is huge,” says Paul Krueger, Immunity+ Global Brand Manager and Director, Sales and Business Development, United States. “Our clients worldwide have been looking for a simple, genetic answer to herd health and Immunity+ is it! It’s got 20 years of research behind it, over 100 published papers and is proven to reduce disease incidence by at least 4-8%. With heritability estimated at 30% it’s one of the easiest decisions you can make to improve the health of your entire herd.” The original immune response research, based on a population of females tested for immune response, estimated heritabilities of 29% for Antibody-Mediated Immune Response (AMIR), 19% for Cell-Mediated Immune Response (CMIR) and 25% for overall Immune Response. Over the past 12 months, there have been two separate genome association studies conducted where as part of each study, the heritabilities for AMIR and CMIR were reestimated. The first study published one year ago was based on a moderate population size including only males tested for immune response, and the latest study just completed was based on a much larger group of both males and females. The two studies showed very similar heritabilities of 46% and 44% for AMIR, and both had a matching heritability of 22% for CMIR. The three research studies were combined to calculate the new 30% heritability figure for overall immune response. For more information on Semex, Immunity+ or any of Semex’s products and services visit
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Semex's Genomax™ Program Most Sought After Worldwide

Many past Genomax stars have gone on to be among the world’s most sought after proven sires. This includes 0200HO07450 Amighetti Numero Uno, now ranking #12 on Holstein USA's Top 100 TPI International list at +2407 GTPI. And, in Canada, Numero Uno gained over 250 LPI points since April, ranking him #2 for LPI and #4 for the brand new Pro$.

Graduating from the Genomax program in August is the highly-anticipated 0200HO02770 Sully Hart Meridian (Domain x Planet x Shottle) who is the best option in the Top 100 TPI International list for dairymen looking for milk and type at +1865 PTAM and +2.87 PTAT, and he ranks as #25 overall at +2333 GTPI! He's A2A2™, Calving Ease™, Repromax™ and a Show Time™ sire that is extremely popular worldwide. ‪

Seven Holsteins by five different sires joined the US Genomax lineup in August, averaging +2515 GTPI, over $670 NM$ and +5.5 PL. These sires join over 100 other sires in the US Genomax lineup that now has 38 sires over +2500 GTPI, averaging well over +1100 PTAM, +112 Combined F&P, nearly $700 NM$ and a solid +1.95 PTAT. 

Topping this list are:

0200HO10314 Zahbulls Governor (Flame x Supersonic x Dorcy) at +2637 GTPI, +736 NM$, +6.8 PL, low 2.53 SCS and the #3 available Flame son in the breed! Governor is also an A2A2™, Robot Ready™ and HealthSmart™ sire.  
0200HO07846 RH Superman (Supersire x Man-O-Man x Baxter) at +2629 GTPI, +2102 Milk, +98 lbs Fat, +69 Pro, +827 NM$ with a +5.6 PL and pleasing type. Superman is also a HealthSmart sire.
0200HO10258 Sandy-Valley-I Penmanship (Enforcer x Numero Uno x Planet) is the #1 GTPI Enforcer in the breed at +2620 GTPI, +755 NM$, +6.5 PL, low 2.75 SCS, +4.5 DPR, 5.6% Calving Ease and solid type. He’s also the #1 £PLI bull in the UK.   

Type specialists should note that Semex is now home to the #1 PTAT sire 0200HO10036 OH-River-SYC Byway (Meridian x Atwood x Shottle). Byway is ... Read More...

Immunity+™: A Herd Health Solution Like No Other

Dairy producers worldwide are raving about the benefits of Semex’s exclusive Immunity+™ sires. As ‘real farm’ performance data accumulates, more clients, veterinarians and processors are excited to improve their own herds’ health naturally.

Based on the HIR (High Immune Response) technology developed by Dr. Bonnie Mallard and her colleagues at the University of Guelph, the research surrounding this technology spans decades. It shows that HIR cows have 19-30% lower disease incidence compared to herd averages. These cows also respond better to commercial vaccines and produce higher quality colostrum. As a result, they are more profitable by bringing in more revenue, lowering costs and wasting less of the dairyman's time. And, most importantly, Immunity+ works.

“It really ensures your herd is healthy, that your herd is looked after and it increases your return on investment,” says Paul Krueger, Semex Immunity+ Global Brand Manager. “For the first time ever we can identify the genetic link to immunity… How the animal responds to disease. No other product or solution available has this, or is 25% heritable with immediate effects… This starts at birth, there’s no wait.”

In August 2015 Semex has:

12 Genomax Immunity+ bulls over +2500 GTPI
45 Genomax Immunity+ bulls over +2400 GTPI
Two new Holstein proven and 10 new Genomax™ sires with Genomax sires averaging over +2500 GTPI
One new Jersey Immunity+ sire:

0200JE01026 Faria Brothers Luda

For more information on Semex, Genetics for Life, Immunity+, Genomax sires or any of Semex’s brands visit: 
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Easily Access Semex's A2A2 Sires

Dairymen and markets wanting to increase the A2 allele prevalence in their herds can now easily access Semex’s A2A2 sires by clicking the A2A2 link under 'dairy' at  This list of both high reliability and Genomax Holsteins, Jerseys and Ayrshires includes a diverse lineup of 75 proven and 90 Genomax™ Holstein sires, 16 proven and 35 Genomax Jersey sires and eight proven and four Genomax Ayrshire sires.  This group includes 0200HO02698 Misty Springs Supersonic, 0200HO06320, Cangen Pinkman and new releases 0200HO02770 Sully Hart Meridian and 0200HO02783 Danhof Detroit as well as 17 Genomax Holstein sires over +2500 GTPI.    Check them out today! 
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Semex is pleased to release one of the world’s top available Enforcer sons, 0200HO10258 Sandy-Valley-I Penmanship, a Genomax™, HealthSmart™ and Robot Ready™ sire.

Penmanship ranks as Enforcer’s #2 GTPI son at +2572 and his #1 NM$ son at 728$! Backed by nine generations of VG or EX dams, Penmanship’s dam is a VG-85 Numero Uno, from Pine-Tree Monica Planeta VG-86, with over 30,000 at 2-1 and five VG daughters to date. Penmanship’s third dam is Pine-Tree Monica Sueal DOM and then Missy Monica VG-85 GMD DOM and Rudy Missy EX-92-3E GMD DOM.

Used as a sire of sons, Penmanship offers excellent 6.0 PL, low 2.75 SCS a 3.7 DPR, +0.09% Pro, 6.0% SCE and solid, breed-pleasing type suited for dairymen everywhere.

The demand for Semex’s Genomax™ genomic young sires has never been higher. We’re working diligently to meet this demand, testing over 6000 young sires in 2014 alone, with only one in seven making the cut and being designated Genomax. 

Ask your Semex representative today about adding Penmanship or any of Semex’s leading genomic young sires in the Genomax lineup today! For additional information on Semex, Genetics for Life, Genomax, HealthSmart, Robot Ready or any of Semex’s products or services visit

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