The study of thallium intoxication on 120 broiler chicken by using different
doses of thallium, 0.2; .5 and 1.0 mg/kg. B.Wt. it was observed that the clinical sign,
bloody diarrhea, appeared in the last ten days of the experiment. In second and third
group the pathologic changes was hemorrhages and edema of skeletal muscles and
brain. Petechial hemorrhage in the testis, ovary and thyroid gland. The
histopathological changes were comprised of hyperplasia, cellular, infiltration in the
thyroid gland, narrow cortex of the ovary, in the brain there were remarkable edema
with perivascular cuffing and loss of purkinge cells in the cerebellum. The results
suggest that thallium was accumulative.