When it’s time to preg-check your cows, the tools you choose matter — not just for knowing who’s bred, but for making better management decisions across the board.
Ultrasound Tells You More — Right Away
It doesn’t just tell you “yes” or “no.”
It gives you real-time, chute-side information that can reshape how you manage your herd:
✅ Pregnancy confirmation — accurate and instant
✅ Fetal aging — know how far along she is
✅ Sexing — heifer or bull, plan your genetics and marketing
✅ Viability — is the calf alive?
✅ Twins & abnormalities — critical info for culling or calving prep
With ultrasound, there’s no waiting, no mailing samples, no guessing.*
You get the data in the moment, while the cow is still in the chute — and you can sort on it immediately.
The detection of abnormalities is just as important
Finding twins, a dead fetus, an infection, or something else could be vital not only to your herd health but to your time as well.
**Time is $$ **
Here are some of the images you may see while preg-checking, which in turn can give you instant data
This ultrasound captures shows a strong twin line. Allows a decision to be made such as where this cow calves. A rancher may choose to calve in the calving pen instead of a pasture to ensure all three animals live.
This ultrasound captures shows a dead fetus in the womb. This information is vital to not only herd health but also the rancher/farmer as a cow may be “recycled” through breeding so a whole breeding season isn’t lost.
Evidence of granulosa tumor cells. A granulosa cell tumor is a benign tumor of the ovary that arises from granulosa and theca cells — the same cells responsible for follicle and hormone production.
Finding an “open” uterus is vital. When a cow is not pregnant, and found early, it allows someone to sort them. The cow may be sorted to go to the sale barn, possibly they have been open several years in a row, or just sorted to be placed back in with a bull and tagged to know it is a different breeding window.
As stated above, finding twins is very important. A young heifer may need more intervention, whereas an experience deep body cow may be able to calve on her own. In addition, ensuring both twins are health in utero is important as well.
This video shows good male GT. This allows those who plan sales to know how many bulls or heifers will be ready for their sale. If a cow consistently produces high-value heifer calves, you can prioritize her or her embryos for replacement heifers. This video also shows the ear of the calf moving, showing just how detailed ultrasounds can be
Infections can be caused by an array of things. And just as wide as what causes infection is what the infection can affect. Your cows may not cycle, could develop inflammation such an endometritis, and affects the embryo survivability.
Blood testing might seem easy, but here’s the truth:
You’re waiting for the results (minutes to days)… and those results can still mislead you. Studies show that residual pregnancy-associated glycoproteins (PAGs) can trigger false positives weeks or even months after a cow has lost a pregnancy.
That’s time lost. And time, in the cattle business, is money, especially right now.
Better Information = Better Decisions
Whether you’re sorting opens, making culling decisions, or selecting replacement heifers, ultrasound arms you with better intel.
Many producers tell us that once they’ve seen the power of real-time ultrasound, they never go back
Ready to Make the Switch?
We’ll help you get started with hands-on training, easy-to-use portable equipment, and support every step of the way.
👉 Call today for more info!
👉Call your local vet to schedule your herd’s preg-checks now.
See more. Know more. Right now.
Interested in Learning More? Check out these sources below…
Northrop et al. (2019) – PLOS ONE Goal: Compare two PAG-based blood tests to ultrasound in beef cattle.
Ergene et al. (2018) – Kafkas Univ. Vet Journal
LSU AgCenter (2023)
Method Comparison at a Glance
| Aspect | Ultrasound | Blood Test (PAG) | 
|---|---|---|
| Earliest Detection | 25–30 days post-breeding | 25–29 days post-breeding | 
| Result Timing | Immediate | 1–3 day delay | 
| False Positive Risk | Low | Higher post-calving | 
| Fetal Viability Info | ✅ Heartbeat visible | ❌ Not available | 
| Fetal Sexing | ✅ Yes (at right stage) | ❌ No | 
| Detects Twins | ✅ Yes | ❌ No | 
ReproScan’s durable ultrasounds give you more data at preg-check, helping you make smarter decisions that protect your feed, time, and bottom line
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