浙江农业学报 ›› 2017, Vol. 29 ›› Issue (11): 1783-1795.DOI: 10.3969/j.issn.1004-1524.2017.11.03

• 动物科学 • 上一篇    下一篇

酵母硒和硼联合添加对肉鸡免疫器官组织结构及免疫功能的影响

靳二辉, 周金星, 任曼, 胡倩倩, 金光明, 李升和*   

  1. 安徽科技学院 动物科学学院,安徽 凤阳 233100
  • 收稿日期:2017-04-11 出版日期:2017-11-20 发布日期:2017-12-05
  • 通讯作者: 李升和,E-mail:lishhe2005@163.com
  • 作者简介:靳二辉(1976—),男,河南汝州人,博士,副教授,主要从事动物解剖与组织学研究。E-mail:jineh@ahstu.edu.cn
  • 基金资助:
    国家自然科学基金(31402154,31502137,31672502); 国家星火计划项目(2015GA710015); 安徽省教育厅重点项目(KJ2017A505,KJ2016A823); 安徽省农业科技成果转化项目(1504032001); 安徽科技学院科研基金重点项目(ZRC2016476,ZRC2013354); 安徽省第七批“115”产业创新团队项目(皖人才[2014] 4号); 安徽科技学院重点建设学科项目(AKZDXK2015A04)

Combined effects of yeast selenium and boron on structure of immune organs and immune function of broilers

JIN Erhui, ZHOU Jinxing, REN Man, Hu Qianqian, JIN Guangming, LI Shenghe*   

  1. College of Animal Science, Anhui Science and Technology University, Fengyang 233100, China
  • Received:2017-04-11 Online:2017-11-20 Published:2017-12-05

摘要: 为研究酵母硒和硼联用对肉鸡免疫器官发育和免疫功能的影响,试验选用健康1日龄AA肉鸡1 200羽,随机分成对照组和处理Ⅰ、Ⅱ、Ⅲ、Ⅳ组,每组6个重复,每个重复40羽。对照组饲喂基础饲粮,处理Ⅰ~Ⅳ组在基础饲粮中添加0.3 mg·kg-1的酵母硒和硼(添加量分别为0、5、10、15 mg·kg-1),试验期42 d。结果显示:1)在21日龄,与对照组相比,处理Ⅱ和Ⅲ组肉鸡法氏囊器官指数,脾小结、动脉周围淋巴鞘和法氏囊小结面积及胸腺皮质厚度均显著(P<0.05)升高;处理Ⅱ组肉鸡血清新城疫病毒(NDV)抗体和干扰素-γ(INF-γ)水平,处理Ⅲ组肉鸡血清白细胞介素-2(IL-2)水平也均显著(P<0.05)升高。2)在42日龄,与对照组相比,处理Ⅱ和Ⅲ组肉鸡胸腺和法氏囊器官指数,脾小结、动脉周围淋巴鞘和法氏囊小结面积,胸腺皮质厚度以及血清NDV抗体和IL-2水平均显著(P<0.05)升高;处理Ⅱ组血清IgG和IFN-γ水平也显著(P<0.05)升高;处理Ⅰ组肉鸡胸腺和法氏囊器官指数及血清IgG水平显著(P<0.05)升高。显微观测可见,处理Ⅱ和Ⅲ组21 d和42 d肉鸡免疫器官组织结构均明显改善,脾脏白髓和红髓结构清晰,胸腺皮质和髓质分界明显,法氏囊小叶数量增多,排列紧密,且处理Ⅰ组肉鸡法氏囊小叶体积也明显增大。结果表明,酵母硒单独补充或与不同剂量的硼联合应用均可在一定程度上促进肉鸡免疫器官的发育,改善其组织结构,增加机体免疫功能,0.3 mg·kg-1酵母硒与5~10 mg·kg-1硼联用促进效果更为明显。

关键词: 酵母硒, 硼, 肉鸡, 免疫器官, 组织结构, 免疫功能

Abstract: In order to study the combined effects of yeast selenium and boron on development of immune organ and immune function of broilers, a total of 1 200 one-day-old AA broilers were randomly divided into five groups, the control group and the experimental groups Ⅰ, Ⅱ, Ⅲ and Ⅳ. Each group included 6 pens and 40 birds per pen. The control group was given a basic diet, while experimental groups Ⅰ, Ⅱ, Ⅲ and Ⅳ were given basic diets supplemented with 0.3 mg·kg-1 yeast selenium and different doses of boron (0, 5, 10, 15 mg·kg-1) for 42 days, respectively. The results showed as follows: 1) Compared with the control group at 21 days of age, the indexes of bursa of Fabricius and the areas of splenic node, periarterial lymphatic sheath and bursa nodule of Fabricius of broilers in experimental group Ⅱ and Ⅲ were significantly (P<0.05) increased; Serum Newcastle disease virus(NDV) antibody and interferon-γ (INF-γ) levels of broilers in experimental group Ⅱ and the serum interleukin-2 (IL-2) contents of broilers in experimental group Ⅲ were also significantly (P<0.05) increased. 2) Compared with the control group at 42 days of age, the indexes of thymus and bursa of Fabricius, and the levels of serum NDV antibody and IL-2, and the areas of splenic node, periarterial lymphatic sheath and bursa nodule of Fabricius of broilers in experimental group Ⅱ and Ⅲ were significantly (P<0.05) increased; the serum IgG and IFN-γ levels of broilers in experimental group Ⅱ were also significantly (P<0.05) increased; The indexes of thymus and bursa of Fabricius and serum IgG levels of broilers in experimental group Ⅰ were significantly (P<0.05) increased. Microscopic observation also showed that at 21 and 42 days of age, the microstructure of immune organs were improved in broilers of experimental group Ⅱ and Ⅲ, such as the structure of white pulp and red pulp of the spleen were clear, the boundary of thymus cortex and medulla was obvious, the node number of bursa of Fabricius were increased and the arrangement was compacted, and the size of bursa of Fabricius lobule also significantly (P<0.05) increased in experimental group Ⅰ. In conclusion, either the alone supplementation of yeast selenium or combined supplementation of yeast selenium and different doses of boron could promote the development of immune organs, improve microstructure and enhance the immune function of broiler to a certain extent, and combined supplementation of 0.3 mg·kg-1 yeast selenium and 5-10 mg·kg-1 boron had more obvious beneficial effects.

Key words: yeas selenium, boron, broiler, immune organ, tissue structure, immune function

中图分类号: