The right cattle ultrasound machine depends on three things: how early you want to call pregnancies, how many head you scan in a day, and how hard the work is on your shoulder. Early work calls for a linear probe. Extension-arm work calls for a convex probe. And every day on the chute calls for a rugged, portable unit with a screen you can read in bright sun.
This guide walks through what to look for in a cow ultrasound machine, how the probes differ, how to match a unit to beef, dairy, or mixed practice, and what to ask before you buy.
Why use ultrasound on cattle at all?
If you already scan cattle, you know the answer. If you’re deciding whether to add it, here’s the case in numbers.
- Earlier answers. University extension sources describe skilled palpation diagnosing pregnancy from roughly 35 days after breeding, while transrectal ultrasonography can confirm it at about 26 to 30 days. The University of Wisconsin extension reports an overall accuracy of 95% for ultrasound 27 days after timed AI.
- More information, not just a yes or no. Ultrasound lets you see fetal viability, estimate fetal age and expected calving date, and spot reproductive problems. Fetal sex can be determined reliably from about 60 days and remains practical to around 90 days, according to University of Missouri Extension.
- A fair caveat. The University of Florida’s IFAS Extension notes that after about 45 days of pregnancy, ultrasound doesn’t improve diagnostic accuracy over rectal palpation by an experienced technician. Ultrasound’s value is earlier calls and more information, not a better answer at 90 days.
- Plan a recheck. Early pregnancy loss is real. In dairy cattle, losses between about day 28 and day 56 have been reported at roughly 13 to 16%, which is why a second exam around day 60 is common. See this review of ultrasound in AI programs.
Match the probe to the job
The probe is the part of the machine that decides what you can see.
Linear probe (about 6.5 MHz). Higher frequency gives finer detail but less depth. ReproScan recommends a 6.5 MHz linear rectal probe for very early pregnancy exams. The ReproScan XTL has a 6.5 MHz, 60 mm linear rectal probe with a 5.0 to 9.0 MHz range and a 4 to 16 cm depth range. It’s compatible with a linear ReproArm.
Convex probe (about 4.0 MHz). Lower frequency trades some fine detail for depth and a wider field. That makes it a good partner for an extension arm. The ReproScan XTC has a 4.0 MHz, 60 mm convex rectal probe (2.0 to 5.0 MHz range) with a 6 to 22 cm depth range, and the BoviScan Curve has a 4.0 MHz, 60 mm convex probe built for rapid pregnancy diagnosis.
T-handle probes. If you also see horses, small ruminants, or companion animals, a unit with several probe options covers more of the farm. ReproScan’s Flexx offers five probes, including a 4.0 MHz convex rectal probe, a 6.5 MHz linear rectal probe, and three T-handle probes.
Extension arm or arm-in-cow?
There are two main ways to scan: arm in the cow, and with an extension arm.
ReproScan’s ReproArm is designed to reduce shoulder and arm strain, and to make pregnancy diagnosis and fetal aging safer and faster. If you’re doing high-volume work, that’s a real consideration, because shoulder and arm strain adds up over a season. ReproArms come in a regular length (32″) for most bovine work, a shorter one (23″) for heifers and short-bred cows in a hydraulic chute, and a mini arm for small ruminants and camelids.
If you plan to use the arm, choose a convex probe unit designed to pair with it, like the XTC or BoviScan Curve.
How we match units to practices
As the official Canadian dealer for Reproscan, we usually point practices like this:
- Beef: the BoviScan Curve or the Flexx
- Dairy: the XTL or the Apexx Linear
- Equine or companion animals: the Flexx
Those are our usual starting points, not rules. The right unit depends on how you scan, so tell us about your practice and we’ll narrow it down. You can see the full lineup on our Reproscan page and in our veterinary ultrasounds category. If you’re unsure which suits you, our general guide to choosing a veterinary ultrasound compares them side by side.
The display matters more than people expect
Sun glare on a chute is one of the most common complaints. You have three display options with these units: a wireless monitor, goggles, or a viewing device.
The ReproScan Wireless Ultrasound Monitor 2.0 is sunlight readable with an LED backlight, has IP63 water and dust resistance, an 8-hour built-in battery, and a 2.4 GHz wireless receiver, and it comes with a sunshade case. ReproScan’s Vista goggles and the NFI 5000 viewing device are other options, and they let you keep your eyes on the cow instead of a screen.
Battery, weight, and weather
The specs that matter at the chute:
| Unit | Probe | Weight | Battery | Warranty |
|---|---|---|---|---|
| XTC | 4.0 MHz convex | 3.3 lb (1.5 kg) | 6 hours, 4 hour charge | 2 years |
| XTL | 6.5 MHz linear | 3.3 lb (1.5 kg) | 6 hours, 4 hour charge | 2 years |
| BoviScan Curve | 4.0 MHz convex | 4.4 lb (2 kg) | 8 hours, built in | 24 months |
All three are splash proof, can be charged from 120/240 VAC or a 12 V car charger, and can be used while charging. The XTC and XTL have interchangeable batteries, so you can carry a spare. ReproScan rates the XTC for -10 to 40 °C, so plan for a cold-weather routine: keep the unit and battery warm until you need them.
Train your team
A good machine still depends on a skilled operator. We offer Reproscan bovine pregnancy ultrasound training with hands-on chute-side practice. See our training page for the current schedule.
Questions to ask before you buy
- Is the dealer local, and who services the machine?
- What’s the warranty, and is a loaner available if the unit needs repair?
- What viewing device is included, and will it work in bright sun?
- Does the probe fit how you scan, extension arm or arm in?
- Is training available for new operators?
Looking at ultrasound for a small animal clinic as well? See our guides to the top veterinary ultrasound machines for small animal clinics and veterinary ultrasound machine cost, and our comparison of the Mindray Z60 Vet and M9Vet.
Our repair team provides phone support and repairs, and our inspection service covers preventative maintenance. If you’re budgeting, financing is available. For a quote, request one here.
Frequently asked questions
What is the best ultrasound machine for cattle pregnancy checking? It depends on how you scan. A convex probe unit like the XTC or BoviScan Curve pairs well with an extension arm for beef work, while a linear probe unit like the XTL suits very early pregnancy exams.
How early can you detect pregnancy in cattle with ultrasound? University extension sources put reliable ultrasound pregnancy diagnosis at about 26 to 30 days after breeding, with 95% accuracy reported at 27 days after timed AI. Skilled palpation typically begins at around 35 days.
Can ultrasound tell you the sex of a calf? Yes. Fetal sex can be determined reliably from about 60 days, based on the location of the genital tubercle, and it remains practical to around 90 days.
What’s the difference between a linear and a convex probe? A linear probe (about 6.5 MHz) gives finer detail at shallower depths and suits very early pregnancy exams. A convex probe (about 4.0 MHz) reaches deeper with a wider field, which makes it a good match for extension-arm scanning.
Do I need a ReproArm? It’s optional, but ReproScan designed it to reduce shoulder and arm strain and to speed up pregnancy diagnosis and fetal aging. It’s worth considering if you do a lot of cattle scanning.
Can one ultrasound handle cattle and horses? A multi-probe unit like the Flexx is built for mixed practice, with five probe options covering bovine, equine, small ruminants, and companion animals.