饲粮中添加杜仲叶提取物对爱拔益加肉鸡生长性能及免疫功能的影响  

Effects of Dietary Eucommia Leaves Extract on Growth Performance and Immune Function of Broilers

作　　者：陈玉敏[1] 黄涛[1] 宋小珍[1] 许兰娇[1] 刘博[1] 符运斌 

机构地区：[1]江西农业大学江西省动物营养重点实验室,南昌330045

出　　处：《动物营养学报》2015年第7期2224-2230,共7页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：国家高技术研究发展计划(863计划;2013BDA10B04-3);江西省高等学校科技落地计划(KJLD12021)

摘　　要：本试验旨在研究饲粮中添加不同水平杜仲叶提取物对爱拔益加（AA）肉鸡生长性能与免疫功能的影响。选择健康1日龄AA肉鸡275羽,随机分为5个组,每组5个重复,每个重复11羽鸡。对照组饲喂基础饲粮,试验组分别在基础饲粮中添加0.05%、0.10%、0.15%、0.20%杜仲叶提取物。试验为期42d。结果表明：1）各组平均日采食量差异不显著（P〉0.05）;与对照组相比,0.15%添加组在8-14d的平均日增重提高了7.42%（P〈0.05）,0.05%、0.10%和0.15%添加组在29-35d的平均日增重分别提高了26.13%、25.05%和24.94%（P〈0.05）;0.05%和0.15%添加组在29-35d的料重比分别比对照组降低了21.15%、19.34%（P〈0.05）。2）各组21、42d肉鸡免疫器官指数、血清免疫球蛋白A含量差异均不显著（P〉0.05）;0.15%添加组21d血清免疫球蛋白G含量比对照组提高了23.06%（P〈0.05）,0.05%、0.15%和0.20%添加组42d血清免疫球蛋白M含量分别比对照组提高了118.89%、73.33%和71.11%（P〈0.05）。由此可见,饲粮中添加一定水平的杜仲叶提取物可提高肉鸡免疫功能,改善生长性能,其中以0.15%的添加水平效果最好。This experiment was conducted to investigate the effects of different Eucommia leaves extract level on growth performance and immune function of Arbor Acre （AA） broilers. A total of 275 one-day-old AA broilers were randomly divided into 5 groups with 5 replicates per group and 11 chickens per replicate. Broilers in the control group were fed a basal diet, and the other were fed the basal diets supplemented with 0.05%, 0.10%, 0.15% and 0.20% Eucommia leaves extract, respectively. The feeding trial lasted for 42 days. The results showed as follows： 1 ） there was no significant difference on the average daily feed intake among all groups （P〉0.05）. Compared with the control group, 0.15% supplemental group increased average daily gain （ADG） by 7.42% during 8 to 14 days （P〈0.05）, and 0.05%, 0.10% and 0.15% supplemental groups increased ADG by 26.13%, 25.05% and 24.94% during 29 to 35 days （P〈0.05）, and the feed to gain ratio of 0.05% and 0.15% supplemental groups decreased by 21.15% and 19.34% during 29 to 35 days （P〈0.05）. 2） There was no significant difference on immune organs index and serum immunoglobulin A content among all groups at 21 and 42 days （P〉0.05）. Compared with the control group, the serum immunoglobulin G content in 0.15% supplemental group increased by 23.06% at 21 days （P〈0.05）, and the serum immunoglobulin M content in 0.05%, 0.15% and 0.20% supplemental groups increased by 118.89%, 73.33% and 71.11% at 42 days （P〈0.05）.In conclusion, dietary supplemented with Eucommia leaves extract can improved growth performance and immune function of broilers, and the suitable supplemental level is 0.15%.

关 键 词：杜仲叶提取物 AA肉鸡 生长性能 免疫功能 

分 类 号：S831[农业科学—畜牧学]