Lead poisoning in cattle and chickens in the state of Pará, Brazil

Pesquisa Veterinária Brasileira

José Diomedes Barbosa²  Henrique Dos Anjos Bomjardim²  Karinny Ferreira Campos²  Marcos Dutra Duarte²  Pedro Soares Bezerra Júnior²  Aldo Gava¹  Felipe Masiero Salvarani²  Carlos Magno Chaves Oliveira² 

[1] ,Universidade Federal do Pará Instituto de Medicina Veterinária Castanhal PA ,Brazil

关键词: Lead poisoning;    neurological disease;    solar energy;    cattle;    poultry;    Intoxicação por chumbo;    doença neurológica;    energia solar;    bovinos;    aves;   

DOI  :  10.1590/S0100-736X2014001100007

来源: SciELO

【 摘 要 】

The present study describes the occurrence of lead poisoning in cattle and chickens in Pará, Brazil. In a lot composed of 80 calves from a dairy herd, 10 animals became sick and nine died, but one animal recovered after being removed from the paddock. Upon inspection of this paddock, the presence of truck batteries used to store energy captured by solar panels was found. The clinical signs observed in calves included difficult breathing, nasal discharge, excessive salivation, corneal opacity, pushing of the head against objects and recumbency. The chickens had decreased oviposition and produced eggs with thin or malformed shells. The necropsy findings of the cattle, as well as the histopathological changes observed, were of little significance except for one animal that showed mild astrocytosis histopathology in the cerebral cortex. In one of the chickens, renal histopathology showed mild multifocal acute tubular necrosis. The mean lead concentrations in the livers and kidneys of the cattle were 93.91mg/kg and 209.76mg/kg, respectively, and the mean concentration detected in chicken livers was 105.02mg/kg. It was concluded that the source of lead poisoning in these calves and chickens were the truck battery plates, which were within reach of the animals.

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