Hauling and respiratory watch

Shipping fever in horses

Shipping fever is the rider name for a serious lung infection that can show up after trailering, especially longer hauls. This guide is built for barn reality: reduce risk, catch it early, and know when it is time to call your veterinarian.

Safety note. This is educational guidance, not veterinary care. If your horse looks distressed, is struggling to breathe, or you are unsure, call your veterinarian.

Quick chooser

Before you load. If your horse is already coughing, has nasal discharge, or seems off, do not travel unless your veterinarian advises it.
After arrival. A calm check is your edge: temperature trend, breathing effort, appetite, and attitude.
When in doubt. Early recognition matters. Shipping fever can start with vague signs like fever and low energy after transport. The Merck Veterinary Manual notes long distance transport with the head held up is a major risk factor. https://www.merckvetmanual.com/respiratory-system/respiratory-diseases-of-horses/pleuropneumonia-in-horses
High concern pattern: fever plus depression or poor appetite within days of trailering, with cough, nasal discharge, or breathing that looks harder than normal.
1 Fever or rising temp trend
2 Low energy, dull attitude
3 Off feed, drinks less
4 Cough, nasal discharge
5 Faster breathing or shallow breaths

Speakable summary

Shipping fever can develop after trailering and often starts with fever and low energy. Reduce risk with clean airflow, steady hydration, safe head down breaks, and a calm arrival check. If fever combines with cough, nasal discharge, or harder breathing, call your veterinarian quickly.


The hauling checklist

Before you load

  • Check baseline: temperature, appetite, attitude, manure output, and water intake.
  • Do not load a horse that seems sick unless your veterinarian directs travel for care.
  • Pack low dust hay and keep trailer air moving.
  • Plan stops long enough for water and a quiet reset.

During the haul

  • Offer water at stops. If your horse prefers flavored water at shows, bring that habit from home.
  • Prioritize ventilation and reduce dust exposure.
  • When safe, allow head down time during breaks to support airway clearance.

Arrival routine

First 10 minutes

Unload calmly, hand walk, and watch breathing. Do not rush into work or heavy feed.

First check

Temperature, hydration, and attitude. Note anything that feels different than normal.

If you want a clean, repeatable post haul body routine, use your existing recovery system. Keep it simple and label true.
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The 7 day watch list after a longer haul

Signs are often nonspecific early, especially after long distance transport, so trends matter. https://www.merckvetmanual.com/respiratory-system/respiratory-diseases-of-horses/pleuropneumonia-in-horses

  • Temperature trend: same time morning and evening if you are monitoring.
  • Energy: does the horse feel flat, dull, or reluctant to move.
  • Appetite and water: finishing hay, drinking normally.
  • Breathing: faster rate at rest, shallow breaths, flared nostrils, abdominal effort.
  • Respiratory signs: cough, nasal discharge, foul odor discharge is a red flag to your vet.
Call your veterinarian quickly if fever combines with depression, off feed, cough, nasal discharge, or breathing effort. Early treatment matters. https://www.merckvetmanual.com/horse-owners/lung-and-airway-disorders-of-horses/pleuropneumonia-shipping-fever-in-horses

Where Draw It Out fits

Shipping fever is a medical condition. Your veterinarian directs diagnosis and treatment. Draw It Out supports the ride, recovery, and routine side of hauling so your program stays consistent.

  • Keep hydration consistent on haul days with your established plan.
  • Run your post haul comfort routine so stiffness and stocking up do not distract from the bigger health check.
  • Use the Prehabilitation mindset so travel stress is not the first stress of the week.
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FAQ

Is shipping fever contagious

Shipping fever usually refers to bacterial pneumonia that develops after transport stress and impaired airway clearance. It is not typically treated as a simple contagious cold, but horses can also carry respiratory viruses around travel. Use common sense biosecurity and ask your veterinarian if you have multiple horses traveling together.

How soon can it show up after trailering

It can appear quickly. The Merck Veterinary Manual notes bacterial colonization of the lower respiratory tract can occur within 12 to 24 hours under higher risk transport conditions, and clinical signs often appear within days after transport. https://www.merckvetmanual.com/respiratory-system/respiratory-diseases-of-horses/pleuropneumonia-in-horses

What is the single best prevention habit

Manage the three drivers you control: clean airflow, hydration, and safe breaks that allow head lowering when possible. If your horse is sick, do not travel unless your veterinarian directs it.

Should I give preventive antibiotics before hauling

This is a veterinary decision. Many experts caution against routine preventive antibiotics. If you are worried because of a past history, call your veterinarian before the trip and build a plan together.

What should I do right when I unload

Walk out quietly, offer water, check temperature and breathing effort, and do not rush into hard work. If anything feels off, start monitoring trends and call your veterinarian early.

Where do I start on your site if I want a simple routine

Start with the Solution Finder, then use Prehabilitation to build a steady travel and recovery program that stays calm and repeatable.

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Education only. Always follow your veterinarian’s guidance and your product label directions. For deeper clinical information on pleuropneumonia and transport risk factors, see the Merck Veterinary Manual. https://www.merckvetmanual.com/horse-owners/lung-and-airway-disorders-of-horses/pleuropneumonia-shipping-fever-in-horses

 

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