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Trends in species affected and sources of metals are discussed.


Biology Articles » Toxicology » Retrospective study of toxic metal analyses requested at a veterinary diagnostic toxicology laboratory in Ontario (1990-1995) » Results

Results
- Retrospective study of toxic metal analyses requested at a veterinary diagnostic toxicology laboratory in Ontario (1990-1995)

There were 4601 submissions for suspected metal poisoning or nutritional imbalance (Table 1). Lead toxicosis was diagnosed in 399 cases, copper toxicosis in 387, zinc toxicosis in 49, mercury toxicosis in 44, iron toxicosis in 4, and selenium in 4 cases. Cattle were most frequently affected by lead (291 animals) but also copper (67 animals), zinc (16 animals), and iron (1 animal). Horses were poisoned by copper (21 animals), lead (8 animals), and zinc (3 animals). Birds were poisoned by lead (89), mercury (83), zinc (20), and copper (4). Sheep were poisoned by copper (280 animals) and selenium (2 animals). One pig was confirmed with iron poisoning. Pets, including dogs and cats, represented only 134 cases submitted for suspect metal toxicosis. Dogs were poisoned by copper (15 animals), lead (4 animals), and zinc (3 animals), while 2 cats were positive for lead toxicosis. Selected toxicoses with tissue levels are also reported in Table 2.


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