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Peroxide Status in Tissues of Heat-Stressed Broilers

  • Lin, H. (Department of Animal Science, Shandong Agricultural University) ;
  • Du, R. (Institute of Animal Science, Chinese Academy of Agricultural Sciences) ;
  • Zhang, Z.Y. (Institute of Animal Science, Chinese Academy of Agricultural Sciences)
  • Received : 2000.03.16
  • Accepted : 2000.05.10
  • Published : 2000.10.01

Abstract

The peroxidation status of tissues was estimated in broilers under acute or chronic heat stress ($32^{\circ}C$, 24 h, $5{\times}24h$) in the present study. The results showed that the lipid peroxide (LPO) concentrations in plasma and liver were elevated (p<0.05) by acute heat stress, and were not influenced in kidney (p>0.05). At the same time, no significant change of superoxide dismutase (SOD) activity in the liver, kidney or plasma was observed. Under chronic heat exposure, the SOD activity in liver was increased (p<0.05) and the LPO concentrations in the liver and plasma were restored to the normal levels. The LPO level in kidney was not affected by chronic heat stress (p>0.05), but SOD activity was significantly decreased (p<0.01). The results suggested that the peroxidation was induced by acute heat stress and disappeared along with the time of heat exposure, and the peroxidation reactions were different among tissues.

Keywords

Broiler;Heat Stress;Peroxidation;Superoxide Dismutase;Lipid Peroxide

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