What are the clinical symptoms and pathological changes of aspergillus toxin poisoning in chicks

The flock appears relatively normal, but the chicks suddenly die, with no obvious symptoms; the dead chicks have dry feet and are dehydrated.

Pathological changes of aspergillus toxin poisoning in chicks: enlarged and hemorrhagic liver, even with blood blisters; diffuse grayish-white necrotic foci on the liver surface; millet-sized round or oval grayish-white or light green necrotic foci on the liver margins; some dead chickens have enlarged kidneys, and a few have urate deposits; the spleen shows diffuse necrosis; some dead chickens have pulmonary hemorrhage. Lesions in the respiratory tract, gastrointestinal tract and other sites are not obvious.