| 摘要: |
| 为分析热应激初期鸡血清生化指标及其变化幅度与耐热性能的关系,以64日龄的Anak 40(♂)与岭南黄鸡(♀)杂交F1代母鸡(n=30)为试验动物,实施(38±1)℃的热应激处理,并分析了5项血清生化指标水平的起始水平及热应激12 h内的变化幅度与耐热时间的相关性。结果表明:36 h后热死或存活鸡组(Ⅱ组)血清葡萄糖起始浓度((12.33±0.88) mmol/L)显著(P<0.05)高于24 h内热死鸡组(Ⅰ组),且葡萄糖的起始浓度与耐热时间呈极显著相关(r=0.48,P<0.01)。Ⅰ组葡萄糖、球蛋白在应激初期12 h内浓度变化幅度分别为35.6%和5.0%,均显著高于Ⅱ组(P<0.05),且葡萄糖、白蛋白和球蛋白的变化幅度与耐热时间的相关系数分别为－0.82(P<0.01)、－0.53(P<0.01)和－0.45(P<0.05)。因此,热应激起始阶段血清生化指标的变化幅度与鸡的耐热性能关系密切,可用作对鸡耐热性能的评价。 |
| 关键词: 鸡 热应激 生化指标 评价 |
| DOI：10.11841/j.issn.1007-4333.2011.02.018 |
| 投稿时间：2010-07-13 |
| 基金项目:国家"863"计划项目(2008AA101009); 国家科技支撑计划课题(2008BADB2B06) |
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| Evaluation of chicken heat tolerance using the changing ofserum biochemical indices in the early stage of heat stress |
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JIANG Run-shen, XIA Wen-tao, CHEN Xing-yong, GENG Zhao-yu
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| (College of Animal Science and Technology,Anhui Agricultural University,Hefei 230036,China) |
| Abstract: |
| To investigate the associations between serum biochemical indices and their changing at early period of heat stress with heat tolerance,sixty four day-old female chickens produced by hybridization of Anak 40 (♂) and Linnan Yellow (♀) were treated under a (38±1)℃ heat stress, and the associations between initial levels as well as the changing in 12-h heat stress of 5 biochemical indices and survival time during heat stress were analyzed.Results showed that the initial serum GLU level ((12.33±0.88) mmol/L) of Group (chickens that survive from the heat stress or over 36 h) was higher (P<0.05) than Group (chickens that survive no more than 24 h),and the initial GLU level is significantly correlated to survival time (r=0.48,P<0.05).The changing of serum GLU and GLB level of Group in the early 12 h of heat stress were 35.6% and 5.0%,respectively,which were higher (P<0.05) than which of Group Ⅱ.The correlation coefficients between the changing of serum GLU,GLB as well as ALB level in the early 12 h and survival time were －0.82(P<0.01),－0.53(P<0.01) and －0.45(P<0.05),respectively.Therefore, the changing of serum biochemical indices during the initial stage of heat stress closely associated the heat tolerance,and it can be used in the evaluation of heat tolerance in chicken. |
| Key words: chicken heat stress biochemical index evaluation |
