摘要
选经常规免疫 ND,IBD的 30周龄健康罗曼蛋鸡 96只 ,按随机法等分为 2组 ,分置于人工气候室内 ,对照组环境温度 2 2℃不变 ,试验组环境温度为 2 2℃ ,16 6 h→ 30℃ ,16 6 h→ 35℃ ,16 6 h→ 40℃ ,4h→ 2 1.3℃ ,2 2 h(15只 40℃致死试验 )温度。定期采血或剖检测定有关指标。结果显示 :1血浆 SOD,GSH- Px在 30℃ 16 6 h显著升高 ,35℃ 16 6 h,40℃显著下降 ,2 1.3℃ 2 2 h下降。40℃高温致死后肝组织 MDA、自由基水平显著增加。2高温致死肝组织氧自由基代谢指标 MDA、自由基水平与不同温段免疫力指标、HSST均呈显著或不显著负相关 ;血浆 GSH- Px,SOD,MDA在 35℃ 16 6 h,40℃ 4h环温下与 HSST呈显著或不显著正相关。 3较长高温应激蛋鸡免疫力指标下降愈大的个体 ,其机体氧自由基代谢抑制程度愈强 ,耐热力愈差 。
The effect of environmental temperature (22 ℃ 7 d,30 ℃ 7 d,33 ℃ 7 d,40 ℃ 4 h,part:40 ℃ 1-43 h) 21.3 ℃ 22 h on plasma SOD,GSH Px,MDA,Liver MDA,index of oxygen radical,and relation of inmune indexs with plasma SOD,GSH Px.MDA,Liver MDA and index of oxygen radical were analysized.The results showed that:(1) Plasma SOD,GSH Px were increased at 30 ℃ 166 h,and decreased at 35 ℃ 166 h,40 ℃ 4 h,and no significant increase at 21.3 ℃ 22 h?Plasma MDA at 30 ℃ 166 h,35 ℃166 h,40 ℃ 4 h and Liver MDA,Oxygen radical at 40 ℃ CT were significantly higher than those of control groups.(2) MDA,oxygen radical of liver at 40 ℃ heat stress were negatively related to indexs of immunity and HSST.Plasma GSH Px,SOD,MDA at 35 ℃ 166 h,40 ℃ 4 h CT were positively related to HSST.
出处
《西北农林科技大学学报（自然科学版）》
CSCD
北大核心
2001年第5期33-36,共4页
Journal of Northwest A&F University(Natural Science Edition)
基金
陕西省科委资助项目 ( 96 K0 1-G1-0 2 )
