Veterinary advice should be sought from your local veterinarian before applying any treatment or vaccine. Not sure who to use? Look up veterinarians who specialize in poultry using our directory listing. Find me a Vet

Arsenic Poisoning

Arsenic Toxicity

Arsenic is a nonmetal or metalloid in group V of the periodic table that is found commonly in small amounts, throughout the environment.
Arsenic element
Arsenic used to be incorporated into a number of common commercially-available products, such as copper chromated arsenate (CCA) wood preservatives (aka "pressure treated wood"), fungicides, pesticides, herbicides, cattle and sheep dips, paints, pigments, cotton desiccants, antifouling paints, fire salts, and leaded gasoline. High levels of arsenic are also found in areas of contaminated environments such as groundwater, soil, and marine organisms (seaweed, algae, fish).

Clinical Signs

Bluish colored comb
Greenish-color stains
Weight loss
Loss of appetite
Decreased egg production


  • History
  • Clinical signs
  • Physical exam
  • Arsenic toxicology test of either feed source or blood, water or urine


Supportive care: Isolate the bird from the flock and place in a safe, comfortable, warm location (your own chicken "intensive care unit") with easy access to water and food. Limit stress. Call your veterinarian.


Scientific References

Risk Factors

  • Low quality feed