畜牧兽医学报

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吡啶甲酸铬对热应激肉鸡淋巴细胞钙离子浓度及免疫功能的影响

韩爱云1,2,张敏红1*,冯京海1   

  1. (1.中国农业科学院北京畜牧兽医研究所 动物营养学国家重点实验室,北京 100193;2. 石家庄学院 化工学院,石家庄 050035)
  • 收稿日期:2012-05-15 出版日期:2013-02-23 发布日期:2013-02-23
  • 通讯作者: 张敏红,博士,研究员,博士生导师,Tel:010-62815990,E-mail: minhong.zhang@yahoo.com
  • 作者简介:韩爱云(1981-),女,河北石家庄人,博士,讲师,主要从事营养与安全方面研究,E-mail: aiyunhan@yahoo.com.cn
  • 基金资助:

    国家“十二五”科技支撑计划项目(2012BAD39B02);动物营养学国家重点实验室自主研究课题[2004DA125184(团)0807];博士科研启动基金(10BJ002)

Effect of Chromium Picolinate on Ca2+ Concentration of Lymphocyte and Immune Response from Heat Stress Broiler Chickens

HAN Ai-yun1,2, ZHANG Min-hong1*, FENG Jing-hai1   

  1. (1. State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; 2. School of Chemical Engineering,Shijiazhuang University,Shijiazhuang 050035, China
  • Received:2012-05-15 Online:2013-02-23 Published:2013-02-23

摘要:

旨在研究吡啶甲酸铬(CrPic)对热应激条件下肉鸡淋巴细胞钙离子浓度及免疫功能指标的影响。本研究选择1日龄AA肉公鸡300只,随机分为5个组(Ⅰ~Ⅴ),每组5个重复,每个重复12只鸡。在15日龄时,试验Ⅰ~Ⅳ组肉鸡分别饲喂含0、400、800、1 200 μg·kg-1 Cr的日粮2周后,再进行日循环高温(27 ℃—35 ℃—27 ℃)处理2周,试验Ⅴ组肉鸡则维持恒温22 ℃作为适温对照组。结果显示,日粮补铬(800~1 200 μg·kg-1)可显著降低热应激肉鸡血浆中的胰岛素水平,抑制淋巴细胞内钙离子浓度和IL-2浓度升高,提高淋巴细胞转化率。表明高温条件下,日粮添加CrPic可缓解热应激对肉鸡细胞免疫功能造成的负面影响。

Abstract:

The experiment was conducted to investigate the effect of chromium picolinate (CrPic) on Ca2+ concentration of lymphocyte and immune response from heat stress broiler chickens. Three hundred 1-day-old Arbor Acres male broiler chickens were randomly allotted to 5 treatments (Ⅰ-Ⅴ), each treatment represented by 5 replicates of 12 birds each. At 15-day-old,the broilers in treatmentⅠ-Ⅳ were pre-fed 0, 400,800,1 200 μg·kg-1 Cr of diet for 2 weeks, then they were housed in 3 controlled environment chambers with daily high cyclic temperature (27 ℃—35 ℃—27 ℃) for 14 d, the broilers in treatment Ⅴ were kept in 22 ℃ as the control group. The result shows that supplemental chromium (800-1 200 μg·kg-1 Cr) decreased serum insulin concentration, supressed the increasement of the lymphocytes [Ca2+i and IL-2 concentration, increased the lymphocyte proliferation. The results sugget that the CrPic could alleviate the negative effect of heat stress on the cellular immune response of heat stress broiler chickens.

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