动物营养学报2015，Vol.27Issue(12)：3887-3894,8.DOI:10.3969/j.issn.1006-267x.2015.12.030
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
Effects of Continuous Partial Heat Treatment on Immune Organ Indexes, Small Intestinal Morphology and Mucosal Immunity Indexes of Broiler Chickens
摘要
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 environ-mental chamber were gradually regulated to 21, 26 and 31 ℃, respectively, while maintaining the relative hu-midity 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 signif-icantly 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 re-duce immune function of intestinal mucosa to varying degrees.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Key words
partial heat treatment/broiler chickens/immune organ indexes/small intestinal morphology/mu-cosal immunity分类
畜牧业引用本文复制引用
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):3887-3894,8.基金项目
国家"十二五"科技支撑课题(2012BAD39B02) （2012BAD39B02）
中国农业科学院科技创新工程(ASTIP-IAS07) （ASTIP-IAS07）
