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浙江大学学报(农业与生命科学版)  2023, Vol. 49 Issue (6): 863-872    DOI: 10.3785/j.issn.1008-9209.2022.10.081
动物科学与动物医学     
三叶青地上部分对肉鸡肠道菌群、免疫功能和生长性能的影响
王晶1,2(),刘滔2,赵敏洁2,冯凤琴1,2,戴笑莹3,乔海军3,彭昕1,4()
1.浙江大学宁波科创中心, 浙江 宁波 315100
2.浙江大学生物系统工程与食品科学学院, 浙江 杭州 310058
3.宁波圣旺生物科技有限公司, 浙江 宁波 315000
4.宁波市中医药研究院, 浙江 宁波 315010
Effects of aboveground parts of Tetrastigma hemsleyanum on the intestinal microflora, immune function and growth performance of broilers
Jing WANG1,2(),Tao LIU2,Minjie ZHAO2,Fengqin FENG1,2,Xiaoying DAI3,Haijun QIAO3,Xin PENG1,4()
1.Ningbo Innovation Center, Zhejiang University, Ningbo 315100, Zhejiang, China
2.College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, Zhejiang, China
3.Ningbo Shengwang Biotechnology Co. , Ltd. , Ningbo 315000, Zhejiang, China
4.Ningbo Research Institute of Traditional Chinese Medicine, Ningbo 315010, Zhejiang, China
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摘要:

为探究三叶青地上部分(三叶青藤叶)对肉鸡生长性能、免疫功能和肠道菌群的影响,将240只健康肉仔鸡随机分成4组,分别为对照组(饲喂基础日粮)和低剂量组、中剂量组、高剂量组(分别饲喂添加1%、3%、5%三叶青藤叶粉的基础日粮)。测定各组21日龄与42日龄试验鸡只体质量,42日龄试验鸡只免疫器官指数和血清免疫球蛋白A(immunoglobulin A, IgA)、IgG、IgM含量以及盲肠内容物的肠道菌群相对丰度。结果表明:与对照组相比,添加三叶青藤叶粉可显著提高42日龄肉鸡的平均日采食量(P<0.05)和平均日增重(P<0.05),且中剂量组促进效果最明显。同时,低、中剂量组肉鸡胸腺指数和法氏囊指数较对照组显著升高(P<0.05)。各剂量组的肉鸡血清中IgA、IgM含量均显著高于对照组(P<0.05),中、高剂量组的IgG含量显著高于对照组(P<0.05)。添加适量三叶青藤叶粉(3%)可显著增加毛螺菌科(Lachnospiraceae)和梭菌科(Clostridiaceae)的相对丰度(P<0.05)。上述结果表明,三叶青藤叶粉可显著提高肉鸡的免疫功能,改善肉鸡肠道菌群组成,提高肉鸡生长性能,其中,以添加3%三叶青藤叶粉的促进效果最为显著。

关键词: 三叶青藤叶生长性能免疫功能肠道菌群    
Abstract:

The effects of aboveground parts of Tetrastigma hemsleyanum, T. hemsleyanum leaves (THL), on the growth performance, immune function and intestinal microflora of broilers were evaluated. A total of 240 broilers were randomly divided into four groups: the control group (fed with a basal diet) and low dose group, medium dose group and high dose group (fed with a basal diet supplemented with 1%, 3% and 5% THL powder, and denoted as THL-L, THL-M and THL-H, respectively). The body masses of broilers at 21 and 42 days of age in each group was measured, and the immune organ indexes and the contents of immunoglobulin A (IgA), IgG and IgM in serum and the relative abundance of intestinal microflora in cecum contents of broilers at 42 days of age were determined. The results showed that compared with the control group, the supplementation of THL powder significantly enhanced the average daily feed intake (P<0.05) and average daily gain (P<0.05) of broilers at 42 days of age, and the promoting effect of the THL-M group was the best. At the same time, compared with the control group, the thymus index and the bursa of fabricius index of broilers in THL-L and THL-M groups were significantly increased (P<0.05). The contents of IgA and IgM in serum of broilers in THL-L, THL-M and THL-H groups were significantly higher than those in the control group (P<0.05). However, IgG content in THL-M and THL-H groups was significantly higher than that in the control group (P<0.05). The relative abundances of Lachnospiraceae and Clostridiaceae were significantly increased by the supplementation of appropriate amount of THL powder (3%) (P<0.05). This study indicated that T. hemsleyanum leaf powder could significantly improve the immune function, the intestinal microflora composition and the growth performance of broilers, and the most significant effect was found with supplementation of 3% THL powder.

Key words: Tetrastigma hemsleyanum leaf    growth performance    immune function    intestinal microflora
收稿日期: 2022-10-08 出版日期: 2023-12-25
CLC:  S831.5  
基金资助: 浙江省宁波市公益性科技计划项目(2021S029);浙江省金华市科技计划项目(20212008)
通讯作者: 彭昕     E-mail: wangjzju@zju.edu.cn;pengx@nit.zju.edu.cn
作者简介: 王晶(https://orcid.org/0000-0002-6394-5357),E-mail:wangjzju@zju.edu.cn
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引用本文:

王晶,刘滔,赵敏洁,冯凤琴,戴笑莹,乔海军,彭昕. 三叶青地上部分对肉鸡肠道菌群、免疫功能和生长性能的影响[J]. 浙江大学学报(农业与生命科学版), 2023, 49(6): 863-872.

Jing WANG,Tao LIU,Minjie ZHAO,Fengqin FENG,Xiaoying DAI,Haijun QIAO,Xin PENG. Effects of aboveground parts of Tetrastigma hemsleyanum on the intestinal microflora, immune function and growth performance of broilers. Journal of Zhejiang University (Agriculture and Life Sciences), 2023, 49(6): 863-872.

链接本文:

https://www.zjujournals.com/agr/CN/10.3785/j.issn.1008-9209.2022.10.081        https://www.zjujournals.com/agr/CN/Y2023/V49/I6/863

日粮组成

Diet ingredient/%

CKTHL-LTHL-MTHL-H
玉米 Corn60.560.560.560.5
小麦麸 Wheat bran5.04.02.00.0
三叶青藤叶粉 T. hemsleyanum leaf powder0.01.03.05.0
豆粕 Soybean meal23.023.023.023.0
玉米蛋白粉 Corn gluten meal6.06.06.06.0
大豆油 Soybean oil1.51.51.51.5
磷酸氢钙 CaHPO41.51.51.51.5
石灰石 Limestone1.21.21.21.2
氯化钠 NaCl0.30.30.30.3
预混料1) Premix1)1.01.01.01.0
总计 Total100.0100.0100.0100.0

营养指标

Nutritional index

CKTHL-LTHL-MTHL-H
粗蛋白 Crude protein/%18.8918.9118.9318.95
代谢能 Metabolic energy/(MJ/kg)12.5512.5712.5812.59
钙 Ca/%0.890.890.890.89
总磷 Total P/%0.600.610.620.63
赖氨酸 Lysine/%0.950.960.960.97
蛋氨酸 Methionine/%0.400.400.400.50
蛋氨酸和胱氨酸混合物 Mixture of methionine and cystine/%0.720.730.750.76
表1  不同试验组日粮组成及营养指标

指标

Index

日龄

Days of age

CKTHL-LTHL-MTHL-H

平均日采食量

Average daily feed intake/(g/d)

21日龄54.78±3.35a55.00±2.50a56.33±1.32a56.78±1.86a
42日龄121.11±4.81b125.44±3.71a126.56±4.67a123.11±1.76b

平均日增重

Average daily gain/(g/d)

21日龄32.22±1.86c34.56±1.59b37.22±3.11a36.89±1.62a
42日龄74.33±3.77c77.78±2.63b82.56±1.81a78.44±2.35b

料重比

Feed to gain ratio

21日龄1.70±0.08a1.59±0.11b1.51±0.16c1.54±0.04c
42日龄1.63±0.09a1.61±0.07a1.53±0.07c1.57±0.06b
表2  三叶青藤叶粉对肉鸡生长性能的影响

指标

Index

CKTHL-LTHL-MTHL-H
胸腺指数 Thymus index/(g/kg)2.31±0.22c2.62±0.17b2.88±0.15a2.45±0.19c
脾脏指数 Spleen index/(g/kg)1.47±0.17a1.56±0.19a1.57±0.15a1.53±0.14a
法氏囊指数 Bursa of fabricius index/(g/kg)1.26±0.17c1.46±0.12b1.57±0.15a1.33±0.21c
IgA/(mg/mL)0.92±0.07c1.15±0.08b1.25±0.07a1.18±0.07b
IgG/(mg/mL)0.90±0.04c0.93±0.06c1.03±0.07b1.16±0.05a
IgM/(mg/mL)0.99±0.09c1.09±0.09b1.12±0.14b1.32±0.10a
表3  三叶青藤叶粉对肉鸡免疫指标的影响
图1  三叶青藤叶粉中剂量组与对照组间主坐标分析结果横、纵坐标轴的刻度表示相对距离,无实际意义;百分比表示主坐标轴对样本组成差异的解释度。图中每个点代表一个样本,样本间距离越近说明样本间肠道菌群组成差异越小。
图2  组间肠道菌群结构对比
图3  组间肠道菌群特征微生物分析A. LEfSe进化分支图;B.差异微生物的线性判别分析得分分布柱状图(LDA得分>3)。
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