In large-scale pig farms, sheep farms, artificial insemination stations, and scientific breeding institutions, early and accurate diagnosis of the pregnancy status of female animals is a core element in optimizing breeding plans, reducing feeding costs, and improving the reproductive efficiency of the herd. Periodmed Medical's PU-VP081A fully digital handheld veterinary ultrasound diagnostic system is specifically optimized for the reproductive physiology of large animals such as pigs and sheep and for the actual working environment of farms. With "portability, durability, clear imaging, and standardized data" as its core features, it provides a reliable imaging diagnostic tool for modern breeding management.

I. Core Application Scenarios: Precise Coverage of the Entire Breeding Management Chain

1. Large-Scale Pig Farms: Batch-Based Pregnancy Checks and Rapid Screening for Non-Pregnant Sows

Detection Window: Preliminary observation of the gestational sac can be performed starting 21 days after mating; the golden period for fetal heart rate confirmation is 28–35 days.

Operation Path: Scanning via the abdominal wall (above the second-to-last nipple) or rectum.

Management Value: Quickly identifies non-pregnant sows, avoiding ineffective feed and management resource input; combined with multiple birth count functionality, it allows for advance planning of farrowing and lactation nutrition.

2. Large-Scale Sheep Farms: Multiple Birth Monitoring and Perinatal Early Warning

Detection Window: The gestational sac structure can be clearly identified starting 25 days (rectal) or 30 days (external) after mating.

Operation Path: Scanning via the abdominal wall in front of the udder or rectal examination (selected according to sheep size and restraint conditions).

Management value: Accurately determine singleton/multiple birth (commonly 2–4 lambs), assisting in the implementation of group feeding and precise nutritional regulation; mid-term monitoring of placental blood flow and embryonic activity, reducing the incidence of miscarriage and weak lambs.

3. Artificial Insemination Stations: Post-Mating Effect Verification and Estrus Cycle Tracking

Provides standardized follow-up services for inseminated females, shortening the return-to-estrus determination cycle and improving the accuracy of insemination success rate statistics.

In conjunction with follicle development monitoring, optimizes the timing of the next mating cycle, forming a closed-loop management system of "insemination – pregnancy check – recording".

4. Research and Breeding Institutions: Reproductive Physiology Research and Data Archiving

Supports recording of early pregnancy embryonic development trajectory, observation of placental microcirculation, and comparative experiments on reproductive performance.

Compatible with DICOM standard format export, meeting the needs of academic paper publication, experimental data traceability, and cross-institutional collaboration.

II. Core Technical Parameters and Clinical Adaptation Advantages

8-inch Medical LCD Monitor: Wide viewing angle, high contrast design, with one-click full-screen function, maintaining clear and readable images even during mobile operations on the farm or in strong outdoor lighting conditions.

More than 28 types of dot/line grid display: Aids in quickly locating the measurement cursor, improving the efficiency and repeatability of interpreting gestational sac diameter, fetal diameter, and backfat thickness.

28+ pseudo-color display modes: Enhances the contrast between tissue interfaces and blood flow signals, facilitating the differentiation of the gestational sac wall, yolk sac, and early fetal heartbeat areas.

Multi-segment electronic focusing with adjustable settings: Flexibly optimizes the focus position for different gestational weeks and abdominal wall thicknesses, significantly improving image clarity in target areas.

Washable body + silicone protective design: Meets the actual environmental needs of high humidity, dust, and easy contamination in farms, facilitating daily cleaning and disinfection and extending the equipment's service life.

Large-capacity lithium battery (≥6 hours of runtime): Supports continuous 24/7 inspections, meeting the power supply needs of large-scale pig farms or sheep farms for single-batch centralized screening.

One-click saving/restoring of probe preset parameters: Built-in presets for commonly used examinations in pigs, sheep, and other species, reducing on-site gain/dynamic range adjustment time and lowering the operational threshold.

Flexible configuration of multiple probes: Optional convex array, linear array, rectal convex array, rectal linear array, and backfat probes, covering all scenarios of abdominal pregnancy examination, deep rectal exploration, and body condition scoring.

≥128MB video memory + multi-format export: Supports BMP/JPG/PNG/TIFF/DICOM image and WMV/MP4 video storage, facilitating the creation of individual breeding electronic records.

III. Application Benefits: From Experience-Based Judgment to Data-Driven Economic Benefits

Reduced Costs of Non-Pregnant Individuals: Early culling of non-pregnant individuals saves approximately 1000–1800 RMB per head of ineffective feeding costs per year (depending on regional feed prices).

Improved Reproductive Indicators: Accurate monitoring of pregnancy status and due date optimizes farrowing pen turnover, significantly improving the stability of conception rate and litter size/lamb number.

Reduced Perinatal Losses: Mid-term fetal activity and placental perfusion monitoring allow for early intervention in developmentally delayed or abnormal pregnancies, reducing dystocia and stillbirth rates.

Management Benefits

Standardized Operating Procedures: Pre-stored parameters and grid-assisted measurement reduce reliance on individual veterinarian experience, facilitating rapid onboarding of new staff and replication of services across different sites.

Data-driven decision support: Inspection records can be archived with a single click, supporting data correlation analysis throughout the entire cycle of breeding, pregnancy check-up, and delivery, providing a basis for optimizing core indicators such as PSY/MSY.

Mobile service extension: The portable design with 6 hours of battery life supports outreach services from artificial insemination stations to rural areas, multi-site mobile screening, and emergency diagnostic dispatch.

IV. Implementation Recommendations and Factual Boundary Explanation

1. Reference Detection Window: For pigs, 21 days and for sheep, 25–30 days are the reference time for clinically discernible gestational sacs. Actual imaging clarity is affected by animal condition, bladder fullness, probe coupling effect, and operator technique.

2. Probe Selection Recommendations: For abdominal pregnancy check-ups, a convex array probe (3.5–5MHz) is recommended; for deep rectal examination, a rectal convex array/linear array probe (5–7.5MHz) is recommended; for body condition assessment, a backfat probe can be selected. Specific configurations should be combined with the farm's species structure and budget planning.

3. Data Compliance Management: DICOM format export and image archiving must be compatible with the institution's internal information system protocols; when using research data, ethical guidelines for laboratory animals and data security requirements must be followed.

4. Maintenance and Training: It is recommended that operators receive basic ultrasound anatomy and standard section training; routine equipment maintenance, including probe cleaning, battery charging/discharging management, and software version maintenance, must be performed according to the instruction manual.

For a probe configuration list for the PU-VP081A handheld veterinary ultrasound diagnostic system, a standardized pregnancy testing SOP template, or on-site operation training arrangements, please contact the Periodmed Animal Medical Technical Service Team.