动物营养学报 >

2019 , Vol. 31 >Issue 2: 801 - 808

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.02.036

饲料科学与技术 Feed science and technology

饲粮添加黄芪和乳酸菌对青脚麻肉鸡生长性能、肠道微生物及抗氧化性能的影响

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  • 西北民族大学生命科学与工程学院, 兰州 730030
张国华(1980-),女,山西河津人,副教授,博士,研究方向为动物营养与饲料利用。E-mail:zhgh513@126.com

收稿日期: 2018-07-09

  网络出版日期: 2019-02-18

基金资助

国家自然科学基金项目（31460589，31560639）；"一优三特"生物工程特色学科中央高校基本科研业务费项目（31920180125）；西北民族大学研究生科研创新项目（Yxm2016137）

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Effects of Dietary Astragalus mongholicus and Lactobacillus on Growth Performance, Intestinal Microflora and Antioxidant Ability of Qingjiaoma Broilers

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  • College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China

Received date: 2018-07-09

  Online published: 2019-02-18

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摘要

本试验旨在探讨饲粮添加黄芪和乳酸菌对青脚麻肉鸡生长性能、肠道微生物及抗氧化性能的影响。选用健康、体重相近的25日龄雄性青脚麻肉鸡200只，随机分为4组，每组25个重复，每个重复2只。对照组饲喂基础饲粮（含1%苜蓿草粉），黄芪组以1%黄芪粉替换基础饲粮中的苜蓿草粉，乳酸菌组在基础饲粮中添加4.5×107 CFU/g乳酸菌，黄芪+乳酸菌组以1%黄芪粉替换基础饲粮中的苜蓿草粉同时添加4.5×107 CFU/g乳酸菌。试验期40 d。结果表明：1）与对照组相比，饲粮添加黄芪、乳酸菌或二者联合添加对肉鸡平均日采食量没有显著影响（P>0.05），但显著提高平均日增重（P<0.05），显著降低料重比（P<0.05）。2）与对照组相比，饲粮添加黄芪、乳酸菌或二者联合添加显著增加盲肠中乳酸杆菌数量（P<0.05），显著降低大肠杆菌数量（P<0.05）。3）与对照组相比，饲粮添加黄芪、乳酸菌或二者联合添加对胸肌和腿肌pH没有显著影响（P>0.05），但可不同程度改善亮度、红度、黄度值及剪切力等感官性状指标。4）与对照组相比，饲粮添加黄芪及黄芪和乳酸菌联合添加显著提高肉鸡血浆总抗氧化能力（T-AOC）、谷胱甘肽过氧化物酶活性及肝脏T-AOC（P<0.05），但添加乳酸菌对上述指标没有显著影响（P>0.05）。由此可见，1%黄芪和4.5×107 CFU/g乳酸菌联合添加对提高肉鸡生长性能、改善肉色、提高抗氧化能力和维持肠道微生物平衡有一定的协同作用。

关键词： 黄芪; 乳酸菌; 肉鸡; 生长性能; 肠道微生物

本文引用格式

张国华, 岳小婧, 于淇, 戴洪伟, 陈妍, 卢建雄 . 饲粮添加黄芪和乳酸菌对青脚麻肉鸡生长性能、肠道微生物及抗氧化性能的影响[J]. 动物营养学报, 2019 , 31(2) : 801 -808 . DOI: 10.3969/j.issn.1006-267x.2019.02.036

Abstract

The experiment was conducted to study the effects of dietary Astragalus mongholicus and Lactobacillus on growth performance, intestinal microflora and antioxidant ability of broilers. Two hundred Qingjiaoma male broilers at 25 days of age were randomly allotted to 4 groups with 25 replicates per group and 2 broilers per replicate. The broilers in the control group were fed a basal diet (contained 1% alfalfa meal), and those in Astragalus mongholicus group were fed the basal diet with 1% Astragalus mongholicus to replace the alfalfa meal, those in Lactobacillus group were fed the basal diet with 4.5×107 CFU/g Lactobacillus, and those in Astragalus mongholicus+Lactobacillus group were fed the basal diet with 1% Astragalus mongholicus to replace the alfalfa meal and added 4.5×107 CFU/g Lactobacillus, respectively. The experiment lasted for 40 days. The results showed as follows:1) compared with the control group, diets supplemented with Astragalus mongholicus, Lactobacillus or both of them did not significantly affect average daily feed intake (ADFI) of broilers (P>0.05), but significantly increased average daily gain (ADG) (P<0.05), and significantly decreased feed/gain (F/G) (P<0.05). 2) Compared with the control group, diets supplemented with Astragalus mongholicus, Lactobacillus or both of them could significantly promote the proliferation of Lactobacilli (P<0.05) and significantly inhibit the proliferation of Escherichia coli in caecum (P<0.05). 3) Compared with the control group, diets supplemented with Astragalus mongholicus, Lactobacillus or both of them had no significant effect on the pH of breast and thigh muscle (P>0.05), but the sensory traits such as brightness,reddishness,yellowness values and shear stress of breast and thigh muscle were improved to some extent. 4) Astragalus mongholicus and the combination of Astragalus mongholicus and Lactobacillus could significantly increase plasma total antioxidant capacity (T-AOC), glutathione peroxidase (GSH-Px) activity and liver T-AOC (P<0.05), but Lactobacillus had no significant effect on these antioxidant indexes (P>0.05). It can be concluded that diets supplemented with 1% Astragalus mongholicus and 4.5×107 CFU/g Lactobacillus together have synergistic effects on increasing growth performance, improving meat color and antioxidant capacity, and maintaining intestinal microflora balance of broilers.

Key words： Astragalus mongholicus; Lactobacillus; growth performance; intestinal microflora; broilers

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