持续偏热处理对肉仔鸡免疫器官指数、小肠形态结构和黏膜免疫指标的影响

张少帅; 甄龙; 冯京海; 胡春红; 彭骞骞; 常玉; 周莹; 张敏红

doi:10.3969/j.issn.1006-267x.2015.12.030

动物营养学报 >

2015 , Vol. 27 >Issue 12: 3887 - 3894

DOI: https://doi.org/10.3969/j.issn.1006-267x.2015.12.030

研究简报 Short Communications

持续偏热处理对肉仔鸡免疫器官指数、小肠形态结构和黏膜免疫指标的影响

张少帅 ,
甄龙 ,
冯京海 ,
胡春红 ,
彭骞骞 ,
常玉 ,
周莹 ,
张敏红

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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. 河北工程大学农学院, 邯郸 056021

收稿日期: 2015-06-15

网络出版日期: 2015-12-14

基金资助

国家"十二五"科技支撑课题(2012BAD39B02);中国农业科学院科技创新工程(ASTIP-IAS07)

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Effects of Continuous Partial Heat Treatment on Immune Organ Indexes, Small Intestinal Morphology and Mucosal Immunity Indexes of Broiler Chickens

ZHANG Shaoshuai ,
ZHEN Long ,
FENG Jinghai ,
HU Chunhong ,
PENG Qianqian ,
CHANG Yu ,
ZHOU Ying ,
ZHANG Minhong

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1. State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
2. College of Agriculture, Hebei University of Engineering, Handan 056021, China

Received date: 2015-06-15

Online published: 2015-12-14

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摘要

本试验研究了不同持续偏热(26和31℃)处理对肉仔鸡免疫器官指数、小肠形态结构和黏膜免疫指标的影响。试验选取22日龄爱拔益加(AA)肉仔鸡144只转入人工气候实验舱,随机分成3个处理,每个处理6个重复,每个重复8只(公母各占1/2)。适应期7 d,温度21℃,相对湿度60%。29日龄时,试验温度分别调整到21、26和31℃,相对湿度60%,至试验结束,试验期共14 d。结果表明:与21℃处理相比,1)26和31℃处理对肉仔鸡胸腺指数无显著影响(P>0.05);第7天,31℃处理显著降低脾脏指数(P<0.05);第7、14天,31℃处理显著降低法氏囊指数(P<0.05)。2)26和31℃处理显著降低第14天空肠和回肠绒毛高度(P<0.05);31℃处理显著升高第14天空肠隐窝深度(P<0.05);26和31℃处理显著升高第14天回肠隐窝深度(P<0.05)。3)31℃处理显著降低第1天十二指肠分泌型免疫球蛋白A(SIgA)含量,26和31℃处理显著降低第7天十二指肠SIgA含量;31℃处理显著降低第1天空肠SIgA含量。因此,与21℃处理相比,持续偏热(26和31℃)处理不同程度影响肉仔鸡免疫器官的发育,损伤小肠形态结构,降低小肠黏膜免疫功能。

关键词： 偏热处理; 肉仔鸡; 免疫器官指数; 小肠形态结构; 黏膜免疫

本文引用格式

张少帅 , 甄龙 , 冯京海 , 胡春红 , 彭骞骞 , 常玉 , 周莹 , 张敏红 . 持续偏热处理对肉仔鸡免疫器官指数、小肠形态结构和黏膜免疫指标的影响[J]. 动物营养学报, 2015 , 27(12) : 3887 -3894 . DOI: 10.3969/j.issn.1006-267x.2015.12.030

Abstract

This experiment was conducted to study the effects of different continuous partial heat(26 and 31℃) treatments on immune organ indexes, small intestinal morphology and mucosal immunity indexes of broiler chickens. One hundred and forty-four 22-day-old Arbor Acres(AA) broiler chickens were assigned to three environment chambers(treatments), each chamber contained six cages(replicates) with eight birds per cage(with four males and four females). The pre-test period lasted for 7 days and broiler chickens were kept at 21℃ and 60% relative humidity. When broiler chickens were 29-day-old, the temperatures of each environmental chamber were gradually regulated to 21, 26 and 31℃, respectively, while maintaining the relative humidity at 60% and both kept constant until the end of the experiment. The trial period lasted for 14 days. The results showed as follows:compared with 21℃ treatment, 1) temperature treatments had no significant effect on the thymus index of broiler chickens(P>0.05). On day 7, 31℃ treatment significantly reduced the spleen index(P<0.05). The 31℃ treatment significantly reduced the bursa index on days 7 and 14(P<0.05). 2) The 26 and 31℃ treatments significantly reduced the villus height of jejunum and ileum on day 14(P<0.05). The 31℃ treatment significantly increased crypt depth of jejunum on day 14(P<0.05). The 26 and 31℃ treatments significantly increased the crypt depth of ileum on day 14(P<0.05). 3) The 31℃ treatment significantly reduced the secretory immunoglobulin A(SIgA) content of duodenum on day 1. The 26 and 31℃ treatments significantly reduced SIgA content of duodenum on day 7. The 31℃ treatment significantly reduced SIgA content of jejunum on day 1. In conclusion, compared with 21℃ treatment, the partial heat(26 and 31℃) treatments can affect the development of immune organs, damage small intestinal morphology and reduce immune function of intestinal mucosa to varying degrees.

Key words： partial heat treatment; broiler chickens; immune organ indexes; small intestinal morphology; mucosal immunity

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