中国农业科学 ›› 2011, Vol. 44 ›› Issue (24): 5083-5091.doi: 10.3864/j.issn.0578-1752.2011.24.014

• 畜牧·资源昆虫 • 上一篇    下一篇

日粮添加维生素E对免疫抑制产蛋鸡经济性状下降的调控效应

彭炳勇, 高玉鹏, 王春江, 郑海祖, 皇甫一凡, 纪建新   

  1. 1.西北农林科技大学动物科技学院,陕西杨凌 712100
  • 出版日期:2011-12-15 发布日期:2011-12-15
  • 通讯作者: 通信作者高玉鹏,E-mail:gaoyupeng112@sina.com
  • 作者简介:彭炳勇,E-mail:pengbingyong@126.com
  • 基金资助:

    国家蛋鸡产业技术体系项目资助(CARS-41-S23)

Modulation of Dietry Vitamin E on Economic Characterization of Immunosupressed Laying Hens

 PENG  Bing-Yong, GAO  Yu-Peng, WANG  Chun-Jiang, ZHENG  Hai-Zu, HUANG  Fu-Yi-Fan, JI  Jian-Xin   

  1. 1.西北农林科技大学动物科技学院,陕西杨凌 712100
  • Online:2011-12-15 Published:2011-12-15

摘要: 【目的】研究在基础日粮中添加维生素E对环磷酰胺诱导产蛋鸡免疫抑制的调控效应。【方法】将270 只健康尼克褐产蛋鸡随机等分为5组,每组3个重复,每个重复18只。Ⅰ、Ⅱ组饲喂基础日粮(维生素E含量44.59 mg•kg-1),Ⅲ、Ⅳ、Ⅴ组在基础日粮中分别添加50、100和200 mg•kg-1维生素E。试验第5、6、7天,对Ⅱ—Ⅴ组产蛋鸡注射80 mg•kg-1 BW环磷酰胺建立免疫抑制模型,第Ⅰ组注射等量生理盐水。【结果】日粮中添加VE能显著提高免疫抑制产蛋鸡的产蛋性能和饲料转化率、养分表观代谢率(P<0.05),提高免疫抑制产蛋鸡脾脏和胸腺的相对重量和新城疫(new castle disease,ND)、H5和H9亚型禽流感(avian influenza,AI)抗体滴度及血浆谷胱甘肽过氧化物酶(glutathione peroxidase,GSH-Px)、超氧化物歧化酶(superoxide dismutase,SOD)活性(P<0.05),降低丙二醛(malondialdehyde,MDA)的含量(P<0.05);提高免疫抑制产蛋鸡血浆的PGE2、IL-1、IL-6和TNF-α含量(P<0.05)。【结论】环磷酰胺诱导产蛋鸡所产生的免疫抑制可显著降低其生产性能、养分利用率、抗体水平、抗氧化功能及PGE2和炎性细胞因子含量;日粮中添加维生素E对免疫抑制蛋鸡具有明显的调控效应,且添加水平为50和100 mg•kg-1时效果优于200 mg•kg-1的添加量。

关键词: 维生素E, 蛋鸡, 免疫抑制, 调控机制

Abstract: 【Objective】The modulation of dietary vitamin E levels on immunosuppressed laying hens induced by cyclophosphamide (CTX) was studied. 【Method】Two hundred and seventy Nick Red laying hens were randomly divided into 5 groups and each group had 3 replications with 18 birds. Laying hens from group Ⅲ, Ⅳ, and Ⅴ(birds treated with vitamin E) were fed diets supplemented with 50, 100 and 200 mg•kg-1 vitamin E, respectively, whereas group Ⅰ and Ⅱ received only the corn-soybean meal basal diets with 44.59 mg•kg-1 of vitamin E. Laying hens in group Ⅱ-Ⅳ(birds challenged with CTX) were injected in the thigh muscle with CTX at 80 body weight for 3 days, and that in groupⅠ(control group) were injected with the same amount of sterile saline. 【Result】Supplemental vitamin E significantly increased egg production, feed efficiency and nutrient digestibility (P<0.05). The relative weights of the spleen and thymus to the body weight, serum HI antibody titers to H5-AI, H9-AI and ND, plasma GSH-Px and SOD activities were greater in immunosuppressed birds fed supplemented vitamin E (P<0.05), and the MDA concentration was least at 50 mg•kg-1 supplemental vitamin E, and further additions had negative effect (P<0.05). Birds treated with CTX fed diets with supplemental 100 and 200 mg vitamin E/kg had greater plasma PGE2, IL-1, IL-6, and TNF-α levels (P<0.05). 【Conclusion】The results showed that dietary vitamin E supplementation significantly attenuated immunosuppressive effect of CTX challenge in laying hens.

Key words: vitamin E, laying hens, immunosuppression, mechanism