Experiments were carried out to follow up the effect of aflatoxin on the production of hemagglutinating antibodies in birds vaccinated against Newcastle disease and the changes in the serum profile. ...Birds that had been given a feed mixture with 560 and 640 mcg per kg for 20 days showed a lower titer of hemagglutinating antibodies and a drop of the alpha1, alpha2, beta1, gamma2-globulin fractions as well as a rise of the albumin and gamma1-globulin fractions. The liver and kidneys of the treated birds showed dystrophic changes.
