畜牧兽医学报 ›› 2017, Vol. 48 ›› Issue (8): 1529-1534.doi: 10.11843/j.issn.0366-6964.2017.08.018

• 基础兽医 • 上一篇    下一篇

不同异嗜性粒细胞与淋巴细胞比值雏鸡对肠炎沙门菌抗性差异的分析

营凡1,2, 李鹏2, 邢思远2, 李庆贺2, 郑麦青2, 刘冉冉2, 崔焕先2, 文杰2, 马友记1*, 赵桂苹2*   

  1. 1. 甘肃农业大学动物科学技术学院, 兰州 730070;
    2. 中国农业科学院北京畜牧兽医研究所, 北京 100193
  • 收稿日期:2017-02-20 出版日期:2017-08-23 发布日期:2017-08-23
  • 通讯作者: 赵桂苹,女,研究员,E-mail:zhaoguiping@126.com;马友记,男,教授,主要从事动物遗传育种与繁殖研究,E-mail:yjma@gsau.edu.cn
  • 作者简介:营凡(1990-),男,安徽宿州人,硕士,主要从事家禽遗传育种研究,E-mail:18697582881@163.com
  • 基金资助:

    中国农业科学院科技创新工程(ASTIP-IAS04);国家科技支撑项目(2015BAD03B03);国家自然科学基金(31572393)

The Analysis of the Difference of Salmonella Resistance between High and Low Heterophil/Lymphocyte Ratio in Chickens

YING Fan1,2, LI Peng2, XING Si-yuan2, LI Qing-he2, ZHENG Mai-qing2, LIU Ran-ran2, CUI Huan-xian2, WEN Jie2, MA You-ji1*, ZHAO Gui-ping2*   

  1. 1. College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;
    2. Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
  • Received:2017-02-20 Online:2017-08-23 Published:2017-08-23

摘要:

旨在观察雏鸡异嗜性粒细胞与淋巴细胞比值(heterophil/lymphocyte,H/L)的高低对肠炎沙门菌免疫应答反应的差异,证明低H/L值的群体具有更优的抗性。分别选用京星黄鸡H系做亲本,该系已完成H/L选择8个世代,选择比值高低不同的公母鸡分组,按照公母比例1∶3组建半同胞家系。后代按亲本比值高低分为HG组(High H/L Group)和LG组(Low H/L Group),于7日龄口服肠炎沙门菌感染,感染后1、2、4、7、13 d(days post infection,dpi)进行死亡率、组织载菌量和血清介质指标的统计和检测。结果显示,感染沙门菌后,LG组的死亡率(16.7%)低于HG组(22.9%);LG组肝组织载菌量在1、2、4、7 dpi显著低于HG组(P<0.05),13 dpi时差异不显著。LG组血清介质白细胞介素6(interleukin-6,IL-6)的浓度在1、2和4 dpi显著高于HG组(P<0.05),LG组血清肿瘤坏死因子α(tumor necrosis factor-α,TNF-α)和白三烯B4(leukotriene B4,LTB-4)的浓度在1和2 dpi显著高于HG组(P<0.05)。具有低H/L值的雏鸡机体对肠炎沙门菌感染的免疫应答反应更强,有更好的沙门菌抗性。

Abstract:

This study was conducted to reveal the difference of immune response upon Salmonella enteritidis (SE) infection between chickens with different Heterophil and Lymphocyte ratio, and trying to prove that chicken flocks of low H/L values has better resistance to Salmonella. Chicken with high and low H/L ratio were selected as parents, and the offspring were divided as High H/L Group and Low H/L Group (HG and LG). The ratio of male and female is 1:3. The chicks were challenged with SE at 7 days old. Liver, cecum and blood serum were collected at 1, 2, 4, 7 and 13 dpi (days post infection). Our results showed that the mortality rate of LG (16.7%) was significantly lower than HG (22.9%). The CFU of SE in liver were significantly different between HG and LG (P<0.05) at 1, 2, 4 and 7 dpi. IL-6 in serum were remarkably higher in Low H/L group than in high group (P<0.05) at 1, 2 and 4 dpi. Low H/L chickens had more TNF-α and LTB-4 in serum than high H/L chickens (P<0.05) at 1, 2 dpi. Chicken with low H/L ratio might have stronger immune response against bacterial infection.

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