MOLDY GRAINS, MYCOTOXINS AND FEEDING PROBLEMS


Introduction

Aflatoxins

Zearalenone

Trichothecenes (DON, T-2)

Fumonisins

Ochratoxin

Preventative Practices

Detrimental Feed Concentrations

What is ppm & ppb?

Plant Disease Associations

Links

 

OCHRATOXIN  

Toxin Characteristics

This toxin is produced by some species of Penicillium and Aspergillus in cereal grains. Ochratoxin A, affects kidney function.

Crops and Weather Conditions

Toxin production occurs over a wide temperature range. Optimal conditions for ochratoxin production are at a temperature range between 68-77° F and a crop moisture content of 16% or above.  

Impact on Animal Health

Ochratoxin-contaminated feed has its major economic impact on the poultry industry. 

  • Chickens, turkeys and ducklings are susceptible to this toxin

  • Clinical signs of avian ochratoxicosis are similar to other toxins and generally involve reduction in weight gains, poor feed conversion, reduced egg production, poor egg shell quality and kidney poisoning.

Acute toxicity does not seem to constitute a problem in cattle.