Chicken Anemia Virus (CAV)
Chicken Anemia Virus (CAV) - Poultry

How to prevent Chicken Anemia Virus (CAV) on your poultry farm

Chicken Anemia Virus (CAV) is a serious condition that affects young chicks by weakening their immune system.

With the right prevention—like vaccination, hygiene, and biosecurity—you can reduce the risk and keep your birds healthy.

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Cause of Chicken Anemia Virus (CAV)

CAV is caused by the Chicken Anemia Virus, a highly contagious circovirus. It primarily affects young chicks, especially those under two weeks old, by attacking their bone marrow and immune system. This leaves them weak and susceptible to secondary infections, making early prevention critical.

The virus spreads through two main routes:

  • Vertical transmission: Infected hens pass the virus to their eggs, affecting chicks before they even hatch.
  • Horizontal transmission: Chicks pick up the virus from infected birds, contaminated feed, water, or even farm equipment.

How does the Chicken Anemia Virus (CAV) spread?

CAV spreads easily in poultry farms, especially those with poor biosecurity measures. Here’s how it moves:

  • Direct contact: Healthy birds get infected when exposed to sick birds.
  • Contaminated surfaces: Equipment, litter, and even farmworkers can carry the virus between flocks.
  • Poor hygiene: Unclean water, dirty housing, and reused litter increase the risk of infection.
  • Stress factors: Overcrowding, poor nutrition, and harsh environmental conditions weaken birds, making them more susceptible.
Poultry spreading transmission virus

What are the symptoms of the Chicken Anemia Virus?

CAV isn’t always easy to spot early on, but knowing the signs can save your flock. Watch out for:


cav symptoms
  1. Pale combs and wattles
  2. Loss of appetite
  3. Weakness
  4. Slow growth
  5. Anemia (visible as pale skin and mucous membranes)
  6. Bleeding under the skin or in muscles

How to protect poultry from Chicken Anemia Virus (CAV)

Vaccination
1

Vaccination

Make sure breeder hens are vaccinated before they start laying. This protects the chicks through the egg. Talk to your vet about the right timing and vaccine.
Hygiene
2

Hygiene

Limit farm visitors. Disinfect boots, hands and equipment before entering the poultry house. Each person that enters the farm needs to thoroughly shower and wash to reduce pathogen pressure on the animals and prevent the introduction of disease.View MS MegaDes Kiemkill
Colour system
3

Colour system

Dedicated colours for tools, equipment and clothing can help to prevent cross contamination between farms, locations or barns. How to set-up a colour system
Clean and disinfect the poultry barn
4

Clean and disinfect the poultry barn

A strict cleaning and disinfecting protocol for the living environment and all vehicles, tools and equipment that enters the farm. A strict protocol helps prevent the introduction and spread of disease.How to clean and disinfect a poultry barn

Advice of our expert

MS MegaDes Kiemkill is a disinfectant in powder form with a broad efficacy range against bacteria, yeasts, fungi and viruses. MS MegaDes Kiemkill is a fast acting disinfectant which is ideal for footwear disinfecting.
Contact MS Schippers
Call for personal advice +31-(0)497-339774 or send an email to export@msschippers.com

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