禽营养与饲料 POULTRY NUTRITION AND FEED

乳酸链球菌素对肉鸡生长性能、抗氧化和免疫性能及肠道形态的影响

  • 羊秀美 ,
  • 陈炳旭 ,
  • 吕静 ,
  • 郭丽娟 ,
  • 闵育娜
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  • 西北农林科技大学动物科技学院, 杨陵 712100
羊秀美(1976-),女,海南儋州人,硕士研究生,从事动物营养与饲料科学研究。E-mail:yxmytys@126.com

收稿日期: 2021-01-19

  网络出版日期: 2021-08-11

基金资助

陕西省重点研发计划项目(2021NY-005)

Effects of Nisin on Growth Performance, Antioxidant and Immune Performance and Intestinal Morphology of Broilers

  • YANG Xiumei ,
  • CHEN Bingxu ,
  • LYU Jing ,
  • GUO Lijuan ,
  • MIN Yu'na
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  • College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China

Received date: 2021-01-19

  Online published: 2021-08-11

Supported by

 

摘要

本试验旨在探究饲粮添加乳酸链球菌素(Nisin)对肉鸡生长性能、抗氧化和免疫性能及肠道形态的影响。选取体重[(38.40±0.80) g]相近、健康的1日龄哈伯德公鸡360只,随机分为3个组,每组6个重复,每个重复20只。对照组饲喂基础饲粮,试验组分别饲喂在基础饲粮中添加0.08%和0.11% Nisin的饲粮。试验期42 d。结果表明:1)与对照组相比,饲粮添加0.08%和0.11% Nisin显著降低了肉鸡22~42日龄和1~42日龄料重比(P<0.05),有提高肉鸡42日龄体重的趋势(P=0.087)。2)与对照组相比,饲粮添加0.08%和0.11% Nisin有提高肉鸡屠宰率的趋势(P=0.066),各组间其他屠宰性能指标无显著差异(P>0.05)。3)21日龄时,Nisin组肉鸡血清总抗氧化能力(T-AOC)显著高于对照组(P<0.05);42日龄时,0.11% Nisin组肉鸡血清超氧化物歧化酶(SOD)活性显著高于对照组(P<0.05)。4)0.11% Nisin组肉鸡21和42日龄空肠绒毛高度显著高于对照组(P<0.05)。5)与对照组相比,饲粮添加0.08%和0.11% Nisin显著提高了肉鸡21日龄空肠分泌型免疫球蛋白A (sIgA)和42日龄血清免疫球蛋白G (IgG)含量;0.11%组肉鸡21日龄血清免疫球蛋白M (IgM)和42日龄空肠sIgA含量均显著提高(P<0.05)。综上所述,在本试验条件下,饲粮添加Nisin可提高肉鸡血清抗氧化能力,调节机体免疫性能,促进小肠绒毛发育,从而改善生长性能,且以0.08%添加水平效益较佳。

本文引用格式

羊秀美 , 陈炳旭 , 吕静 , 郭丽娟 , 闵育娜 . 乳酸链球菌素对肉鸡生长性能、抗氧化和免疫性能及肠道形态的影响[J]. 动物营养学报, 2021 , 33(8) : 4415 -4423 . DOI: 10.3969/j.issn.1006-267x.2021.08.022

Abstract

This study aimed to investigate the effects of dietary nisin on the growth performance, antioxidant and immune performance and intestinal morphology of broilers. A total of 360 one-day-old healthy Hubbard male broilers with similar body weight of (38.40±0.80) g were randomly divided into 3 groups with 6 replicates per group and 20 broilers per replicate. Broilers in the control group were fed a basal diet, and those in the experimental groups were fed the basal diets supplemented with 0.08% and 0.11% nisin, respectively. The results showed as follows:1) compared with the control group, dietary 0.08% and 0.11% nisin significantly decreased the ratio of feed to gain of broilers during 22 to 42 days of age and 1 to 42 days of age (P<0.05), and had a trend to increase the body weight of broilers at 42 days of age (P=0.087). 2) Compared with the control group, dietary 0.08% and 0.11% nisin tended to increase the dressing percentage of broilers (P=0.066), but there were no significant differences in the other slaughter performance indices among all groups (P>0.05). 3) At 21 days of age, the serum total antioxidant capacity (T-AOC) of broilers in nisin groups was significantly higher than that in the control group (P<0.05). At 42 days of age, the serum superoxide dismutase (SOD) activity of broilers in 0.11% nisin group was significantly higher than that in the control group (P<0.05). 4) The villus height in jejunum of broilers at 21 and 42 days of age in 0.11% nisin group was significantly higher than that in the control group (P<0.05). 5) Compared with the control group, dietary 0.08% and 0.11% nisin significantly increased the secretory immunoglobulin A (sIgA) content in jejunum of broilers at 21 days of age and the serum immunoglobulin G (IgG) content at 42 days of age; and the serum immunoglobulin M (IgM) content of broilers at 21 days of age and the sIgA content in jejunum at 42 days of age in 0.11% nisin group were significantly increased (P<0.05). In conclusion, dietary nisin can improve the serum antioxidant capacity, regulate immune performance, promote the development of small intestinal villi, and thus improve the growth performance of broilers under the conditions of this study, and the supplemental level of 0.08% has the best benefit.

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