《中国畜牧兽医》 ›› 2017, Vol. 44 ›› Issue (10): 2916-2922.doi: 10.16431/j.cnki.1671-7236.2017.10.012

• 动物营养与饲料科学 • 上一篇    下一篇

非特异性卵黄抗体对雏鸡生长性能、免疫机能及微生物数量的影响

巨晓军1,2, 马尹鹏1,2, 杨海明1   

  1. 1. 扬州大学动物科学与技术学院, 扬州 225009;
    2. 中国农业科学院家禽研究所, 扬州 225125
  • 收稿日期:2017-02-21 出版日期:2017-10-20 发布日期:2017-10-20
  • 通讯作者: 杨海明 E-mail:yhmdlp@qq.com
  • 作者简介:巨晓军(1989-),女,河北保定人,硕士生,研究方向:动物营养与饲料科学,E-mail:juxiaojun.2009@163.com
  • 基金资助:

    江苏省苏北科技发展计划(科技富民强县项目)(BN2015135);淮安市重点研发计划(现代农业)(HAN2015012)

Effects of Nonspecific IgY on Growth Performance,Immune Function and Microbiota Number of Chicks

JU Xiao-jun1,2, MA Yin-peng1,2, YANG Hai-ming1   

  1. 1. College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China;
    2. Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou 225125, China
  • Received:2017-02-21 Online:2017-10-20 Published:2017-10-20

摘要:

试验旨在研究日粮中添加非特异性卵黄抗体(IgY)对雏鸡生长性能、免疫机能及微生物数量的影响,为IgY作为饲料添加剂在畜禽饲料中的应用提供理论依据。选取同一批出雏、体重接近的1日龄罗曼褐公雏240只,随机分为2组(对照组和试验组),每组6个重复,每个重复20只雏鸡。对照组饲喂基础日粮,试验组在基础日粮中添加0.1%非特异性IgY,试验期6周。每周末称重,在6周龄末从每个重复选取接近该重复平均体重的试验鸡2只屠宰,测定其消化器官的发育、相关免疫指标及肠道微生物数量。结果发现,与对照组相比,日粮中添加非特异性IgY显著提高了1和5周龄雏鸡体重(P < 0.05);显著提高了雏鸡腺胃重、脾脏重、血清白细胞介素-2、空肠食糜分泌型免疫球蛋白A(sIgA)含量(P < 0.05);显著提高了盲肠乳酸杆菌数量(P < 0.05)。以上结果表明,雏鸡日粮中添加非特异性IgY可以促进雏鸡的生长和消化器官发育,提高机体的免疫机能,促进肠道有益菌生长。

关键词: 雏鸡; 卵黄抗体; 生长性能; 消化器官; 免疫机能; 盲肠微生物

Abstract:

This experiment was conducted to study the effects of dietary nonspecific IgY on growth performance, immune function and microbiota number of chicks, to provide the theory basis for practical application as feed additive in livestock and poultry. 240 one-day-old Roman rooster hens with same batch of hatching and similar body weight were randomly divided into 2 groups (control group and experimental group), with 6 replicates in each group and 20 chicks in each replicate. Chicks in the control group were fed with a basal diet, and the others in the experimental group were fed the basal diet supplemented with 0.1% nonspecific IgY. The experiment lasted for 6 weeks. At the age of 6 weeks, 2 chicks from each replicate were weighed and slaughtered, and the development of internal organs, immune index and microbiota number were determined. The results showed that:Comparing with the control group, the weight of chicks at the age of 1 and 5 weeks, the glandular stomach weight, spleen weight, serum IL-2 content, jejunal sIgA content and cecal Lactobacilli number in experimental group were significantly increased (P < 0.05). In conclusion, dietary supplementation of nonspecific IgY could enhance growth performance, digestive organ development, immune function, and intestinal bacteria number.

Key words: chicks; nonspecific IgY; growth performance; digestive organ; immune function; cecal microbiota

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