Order of tolerance of aflatoxin

Answer: Option C

Order of tolerance of aflatoxin is Guinea fowl > Chicken > Duck.
The presence of aflatoxin B₁ (AFB₁) in poultry diets decreases the hatchability, hatchling weight, growth rate, meat, and egg production, meat and egg quality, and vaccination efficiency, as well as impairing the feed conversion ratio and increases the susceptibility of birds to disease and mortality.
It is greatest in Guinea fowl, then in Chicken followed by Duck.