动物营养学报 >

2018 , Vol. 30 >Issue 6: 2118 - 2127

DOI: https://doi.org/10.3969/j.issn.1006-267x.2018.06.014

禽营养 Poultry nutrition

能量限饲对肉鸡生长性能、血清免疫球蛋白含量、外周血T淋巴细胞亚群和血脂水平的影响

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  • 1. 河南农业大学饲料营养河南省工程实验室, 郑州 450002;
    2. 河南牧业经济学院, 郑州 450046
霍文颖(1974-),女,河南杞县人,讲师,博士,从事动物营养与饲料科学研究。E-mail:joycehuohuo@aliyun.com

收稿日期: 2018-02-03

  网络出版日期: 2018-06-20

基金资助

国家自然科学基金（31372329）

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Effects of Energy Restriction on Growth Performance,Serum Immunoglobulin Contents, Peripheral T Lymphocyte Subsets and Blood Lipid Level of Broilers

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  • 1. Feed Nutrition Engineering Laboratory of Henan Province, Hennan Agricultural University, Zhengzhou 450002, China;
    2. Henan University of Animal Husbandry and Economy, Zhengzhou 450046, China

Received date: 2018-02-03

  Online published: 2018-06-20

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摘要

本试验旨在研究不同能量限饲水平对肉鸡生长性能、血清指标、外周血T淋巴细胞亚群和免疫功能的影响。选取22日龄科宝（Cobb）肉鸡72只，随机分为3个组，分别为对照组、试验1组（15%能量限饲组）和试验2组（30%能量限饲组），每组24个重复，每个重复1只鸡。试验期20 d。分别于28、42日龄时屠宰取样。结果表明：1）15%和30%能量限饲组肉鸡的末重和平均日增重均显著低于对照组（P<0.05），30%能量限饲组显著低于15%能量限饲组（P<0.05）；30%能量限饲组22~42日龄时的料重比显著高于15%能量限饲组和对照组（P<0.05）。2）与对照组相比，15%和30%能量限饲显著增加28日龄时肉鸡的血清免疫球蛋白M（IgM）含量和42日龄时的血清免疫球蛋白G（IgG）、免疫球蛋白A（IgA）含量（P<0.05），显著降低28日龄时的血清高密度脂蛋白胆固醇含量（P<0.05）；30%能量限饲显著增加28日龄时的血清IgA含量（P<0.05），显著降低28、42日龄时的血清总胆固醇含量以及42日龄时的血清甘油三脂和高密度脂蛋白胆固醇含量（P<0.05）。3）与对照组相比，30%能量限饲显著增加28日龄时肉鸡的外周血CD8+ T淋巴细胞百分含量（P<0.05）。4）与对照组相比，30%能量限饲显著增加28日龄时肉鸡的法氏囊指数和42日龄时的脾脏指数（P<0.05）。由此可见，能量限饲降低了肉鸡的生长性能，提高了免疫功能，降低了血脂水平。

关键词： 能量限饲; 肉鸡; 免疫球蛋白; T淋巴细胞亚群; 血脂水平

本文引用格式

霍文颖, 王志祥, 黄艳群, 陈文 . 能量限饲对肉鸡生长性能、血清免疫球蛋白含量、外周血T淋巴细胞亚群和血脂水平的影响[J]. 动物营养学报, 2018 , 30(6) : 2118 -2127 . DOI: 10.3969/j.issn.1006-267x.2018.06.014

Abstract

This experiment was conducted to investigate the effects of different energy restriction levels on growth performance, serum indexes, peripheral T lymphocyte subsets and immune function of broilers. Seventy two 22-day-old Cobb broilers were randomly allocated to 3 groups:control group, trial group 1 (15% energy restriction group) and trial group 2 (30% energy restriction group), with 24 replicates per group and 1 broiler per replicate. The experement lasted for 20 days. Broilers were slaughtered and sampled at 28 and 42 days of age. The results showed as follows:1) the final weight and average dialy gain (ADG) of broilers in 15% and 30% energy restriction groups were significantly lower than those in control group (P<0.05), and those in 30% energy restriction group were significantly lower than those in 15% energy restriction group (P<0.05). The ratio of feed to gain (F/G) in 30% energy restriction group was significantly higher than that in 15% energy restriction group and control group from 22 to 42 days of age (P<0.05). 2) Compared with control group, 15% and 30% energy restriction significantly increased the contents of immunoglobulin M (IgM) in serum of broilers at 28 days of age and immunoglobulin G (IgG) and immunoglobulin (IgA) in serum at 42 days of age (P<0.05), and significantly decreased the content of high density lipoprotein cholesterol (HDL-C) in serum at 28 days of age (P<0.05). 30% energy restriction significantly increased the content of IgA in serum at 28 days of age (P<0.05), and significantly decreased the contents of total cholesterol (TC) in serum at 28 and 42 days of age and triglyceride (TG) and HDL-C in serum at 42 days of age (P<0.05). 3) Compared with control group, 30% energy restriction significantly increased the percentage of peripheral CD8+ T lymphocytes of broilers at 28 days of age (P<0.05). 4) Compared with control group, 30% energy restriction significantly increased the bursa of Fabricius index of broilers at 28 days of age and the spleen index at 42 days of age (P<0.05). It is concluded that energy restriction can improve the immune function, reduce blood lipid level and growth performance.

Key words： energy restriction; broilers; immunoglobulin; T lymphocyte subsets; blood lipid level

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