Preventing disease and catching health problems early saves money, lives, and productivity on your operation. Knowing which diagnostic tests and preventative services matter most—and when to schedule them—is what separates farms that stay ahead from those reacting to crises. Here's what you need to know about essential vet services for livestock and large animals.
The Foundation: Annual Herd Health Exams
A comprehensive herd health exam is your baseline. Your veterinarian evaluates body condition, dental health, lameness, and reproductive status across your animals. During this visit, discuss vaccination protocols, parasite management, and any operational changes that might affect disease risk.
Schedule annual exams in a consistent season—typically fall for cattle operations or early spring before breeding. Expect these exams to run $200–$500 per visit depending on herd size and complexity, plus any individual animal assessments.
Diagnostic Testing That Matters
Not all tests are equal. The ones you genuinely need depend on your species, herd size, and market requirements.
Reproductive diagnostics are critical for breeding operations. Pregnancy checks via palpation or ultrasound run $15–$40 per animal and confirm conception within 30–45 days of breeding. Semen analysis for bulls or stallions costs $50–$150 and identifies fertility issues before they derail breeding seasons.
Blood work panels screen for metabolic disorders, mineral imbalances, and infectious diseases. A basic chemistry panel costs $40–$80 per animal and flags conditions like hypocalcemia or liver dysfunction before clinical signs appear. Bulk tank culture for dairy herds ($30–$60) identifies mastitis pathogens and guides antibiotic selection.
Infectious disease testing protects your herd and meets market entry requirements. Brucellosis and tuberculosis screening are mandatory for cattle sales in most states; expect $25–$50 per animal. Equine infectious anemia (EIA) testing for horses costs $20–$35. Many states now require johne's disease testing for imported cattle, ranging $15–$25 per sample.
Parasite diagnostics prevent production losses. Fecal exams cost $15–$30 and reveal internal parasite loads, directing deworming decisions rather than blanket treatments. For horses, spring and fall fecal exams every 6–12 months reduce anthelmintic resistance.
Vaccination Protocols That Fit Your Operation
Vaccination schedules aren't one-size-fits-all. Work with your vet to build a plan aligned with your risk factors, sale channels, and animal movement.
For cattle, core vaccines (blackleg, brucellosis, IBR, BVD) are foundational. Cattle shipped to feedlots or sales barns typically need modified-live respiratory vaccines pre-transport. Costs range $3–$15 per dose depending on product and whether you're doing mass vaccination or individual animal visits.
Equine operations should cover tetanus, Eastern/Western equine encephalitis, and rabies at minimum—often bundled in a 3-way or 5-way shot ($15–$40). High-risk facilities may add influenza and strangles protection.
Swine herds often require customized programs based on disease exposure. Small ruminant operations generally focus on CDT (Clostridium, diarrhea, tetanus) vaccination for kids/lambs.
Lameness Exams and Hoof Care Partnerships
Lameness costs livestock operations real money through reduced weight gain, lower milk yield, and breeding delays. A lameness exam ($100–$300) identifies whether the issue is hoof-related, joint, or systemic.
Partner with a farrier or hoof care specialist your vet recommends. Regular trimming every 6–8 weeks for cattle and every 8–10 weeks for horses prevents many problems. Budget $15–$35 per animal per trimming cycle.
Testing Before Purchase or Sale
If you're buying breeding stock, require health certificates and pre-purchase exams. These cost $150–$400 per animal but prevent introducing disease, parasites, or genetic issues into your herd.
Similarly, if you're selling, offering recent test results (vaccination records, pregnancy checks, disease screening) justifies premium pricing and builds buyer confidence.
Finding and Comparing Vet Providers
Start by asking other producers in your area which vets they trust for your specific species and operation size. Check whether providers offer emergency service availability—critical for large animals—and what their response times look like.
Mercoly helps you compare and hire trusted livestock and large-animal veterinary providers in one place, making it easier to review services, pricing, and availability before committing.
Request written estimates for routine services like pregnancy checks, vaccinations, and fecal exams so you can budget accurately.
Frequently Asked Questions
Q: How often should I have my breeding herd pregnancy checked? Ultrasound exams are typically done at 30–40 days post-breeding, then again at 60 days for confirmation if needed. Many operations do a single check at 45–60 days to balance cost and accuracy.
Q: What's the difference between modified-live and killed vaccines for cattle? Modified-live vaccines provide stronger immunity but aren't suitable for pregnant cows. Killed vaccines are safer in pregnancy but may require boosters. Your vet should recommend based on your herd's exposure history.
Q: Should I do fecal exams on every animal or just a sample? A representative sample (3–5 animals per group or 5–10% of your herd) usually suffices to guide deworming decisions and is far more cost-effective than testing every individual.
Start by scheduling a herd health exam with a vet experienced in your species, then build your testing strategy from there.