Organic Phosphate Insecticide Poisoning in Fattening Calves

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  • 子牛の有機リン系殺虫剤中毒の発生例
  • コウシ ノ ユウキ リンケイ サッチュウザイ チュウドク ノ ハッセイレイ

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In a fattening-cattle farm, fourteen of thirty two calves purchased from a commercial market died. They showed clinical signs of anorexia, ataxia and mucous diarrhoea before death. Insecticide containing 5% fenthion (one of the organophosphorus insecticides) was used in that cowshed. Concentrations of 0.008-0.671 ppm of fenthion were detected in the serum and liver of three affected calves. A concentration of 138 ppm of fenthion was detected inthe litter. The cholinesterase activity was decreased in the affected calves. Except for the fatalities, all affected calves recovered in a few day after they were removed to another cowshed.<BR>These results suggest that the calves were affected by fenthion.

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