Calf Scours: Stop Guessing, Start Testing
August 2026

Scours season can be challenging, and finding a sick calf in the shed is never the way anyone wants to start the day.

When scours appear, acting quickly is important, but treating without knowing the cause can lead to wasted time, unnecessary treatments and poorer outcomes for calves.

Not All Calf Scours Are the Same

Several different pathogens can cause scours in young calves, and each may require a different management approach.

Common causes include:

  • Rotavirus
  • Coronavirus
  • E. coli F5 (K99)
  • Cryptosporidium parvum
  • Giardia

Importantly, antibiotics are not effective against many of these pathogens, including Rotavirus, Cryptosporidium and Giardia.

Knowing exactly what you're dealing with helps you make better decisions about treatment, management and prevention.

Rapid Testing in the Calf Shed

The WITNESS® BoviD-5 test is a simple in-shed diagnostic tool designed to identify five common causes of calf scours.

Much like a rapid COVID test, it can provide results in around 10 minutes, helping farmers and veterinarians quickly determine the likely cause of disease.

The test screens for:

  • Rotavirus
  • Coronavirus
  • E. coli F5 (K99)
  • Cryptosporidium parvum
  • Giardia

How It Works

Using the test is straightforward:

  1. Collect samples from affected calves.
  2. Follow the instructions provided with the test kit.
  3. Wait approximately 10 minutes for results.

No guesswork. No assumptions.

Early identification can help farmers make informed decisions around:

  • Fluid therapy
  • Hygiene and biosecurity measures
  • Calf management practices
  • Veterinary treatment recommendations
  • Disease prevention strategies

Why Early Testing Matters

Testing early allows you and your veterinarian to respond appropriately and reduce the impact of scours on calf health and performance.

Benefits include:

✅ Faster diagnosis

✅ More targeted treatment plans

✅ Reduced unnecessary treatments

✅ Improved calf welfare

✅ Better disease management across the calf shed

Talk to Your Vet

If calf scours are a recurring challenge on your farm, talk to your Vetora veterinarian about incorporating rapid testing into your calf health programme.

Having a WITNESS® BoviD-5 test available in your calf kit can help identify problems sooner and support better treatment decisions throughout the season.

Test early, discuss the results with your veterinarian, and develop a treatment and prevention plan tailored to your farm.