特种经济动物营养与饲料 SPECIAL ECONOMIC ANIMAL NUTRITION AND FEED

β-葡聚糖对肉兔生长性能、免疫器官指数、血清生化和免疫指标的影响

  • 李燕平 ,
  • 詹海杰 ,
  • 郑建婷 ,
  • 曹亮 ,
  • 冯国亮 ,
  • 牛晓艳 ,
  • 任克良
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  • 山西农业大学动物科学学院, 太原 030032
李燕平(1973-),女,山西盂县人,副研究员,硕士,研究方向为家兔疾病预防控制、营养、饲料资源开发。E-mail:810529885@qq.com

收稿日期: 2020-08-04

  网络出版日期: 2020-11-16

基金资助

国家兔产业技术体系专项资金(CARS-43-B-3)

Effects of β-glucan on Growth Performance, Immune Organ Indexes, Serum Biochemical and Immune Indexes of Meat Rabbits

  • LI Yanping ,
  • ZHAN Haijie ,
  • ZHENG Jianting ,
  • CAO Liang ,
  • FENG Guoliang ,
  • NIU Xiaoyan ,
  • REN Keliang
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  • College of Animal Science, Shanxi Agricultural University, Taiyuan 030032, China

Received date: 2020-08-04

  Online published: 2020-11-16

摘要

本试验旨在研究饲粮中添加不同水平β-葡聚糖对肉兔生长性能、免疫器官指数、血清生化和免疫指标的影响。选取240只体重相近的35日龄断奶伊拉商品兔,随机分为4组,每组60个重复,每个重复1只兔。对照组饲喂基础饲粮,试验Ⅰ组、试验Ⅱ组、试验Ⅲ组分别在基础饲粮中添加0.03%、0.05%、0.07%的β-葡聚糖。预试期5 d,正试期22 d。结果表明:1)试验Ⅱ组、试验I组和试验Ⅲ组平均日采食量分别比对照组高2.89%(P<0.05)、1.49%(P>0.05)和1.14%(P>0.05),试验Ⅱ组、试验Ⅲ组和试验I组平均日增重分别比对照组高5.80%(P<0.05)、3.20%(P>0.05)和1.72%(P>0.05)。2)试验Ⅱ组的胸腺指数极显著高于对照组(P<0.01),圆小囊指数显著高于对照组(P<0.05)。3)试验Ⅲ组的血清白蛋白(ALB)含量极显著低于对照组(P<0.01),试验Ⅰ组的血清葡萄糖氧化酶(GOD)活性极显著高于对照组(P<0.01),试验Ⅱ组和试验Ⅲ组的血清谷丙转氨酶(ALT)和谷草转氨酶(AST)活性显著或极显著低于试验Ⅰ组和对照组(P<0.05或P<0.01)。4)试验Ⅱ组的血清免疫球蛋白A (IgA)含量极显著高于对照组(P<0.01),试验Ⅰ组和试验Ⅱ组的血清免疫球蛋白G (IgG)含量极显著高于对照组(P<0.01),试验Ⅰ组和试验Ⅱ组的血清免疫球蛋白M (IgM)含量显著低于对照组(P<0.05),试验Ⅱ组的血清白细胞介素-6(IL-6)含量极显著低于对照组(P<0.01)。综上所述,饲粮添加β-葡聚糖可提高肉兔平均日采食量和平均日增重,增加免疫器官指数,提高机体的免疫力和消化吸收代谢能力。本试验条件下,饲粮中β-葡聚糖适宜添加水平为0.05%。

本文引用格式

李燕平 , 詹海杰 , 郑建婷 , 曹亮 , 冯国亮 , 牛晓艳 , 任克良 . β-葡聚糖对肉兔生长性能、免疫器官指数、血清生化和免疫指标的影响[J]. 动物营养学报, 2020 , 32(11) : 5365 -5372 . DOI: 10.3969/j.issn.1006-267x.2020.11.042

Abstract

This experiment was to investigate the effects of dietary different levels of β-glucan on growth performance, immune organ indexes, serum biochemical and immune indexes of meat rabbits. A total of 240 thirty-five-day-old weaned Hyla commercial rabbits with similar weight were randomly divided into 4 groups with 60 replicates in each group and 1 rabbit in each replicate. Rabbits in the control group were fed a basal diet, and others in experimental group Ⅰ, experimental group Ⅱ and experimental group Ⅲ were fed basal diets supplemented with 0.03%, 0.05% and 0.07% β-glucan, respectively. The pretrial period was 5 days, and the experiment period was 22 days. The results showed as follows: 1) compared with the control group, the average daily feed intake of experimental group Ⅱ, experimental group Ⅰ and experimental group Ⅲ was increased by 2.89% (P<0.05), 1.49% (P>0.05) and 1.14% (P>0.05), respectively; and the average daily gain of experimental group Ⅱ, experimental group Ⅲ and experimental group Ⅰ was increased by 5.80% (P<0.05), 3.20% (P>0.05) and 1.72% (P>0.05), respectively. 2) The thymus index of experimental group Ⅱ was significantly higher than that of the control group (P<0.01), and the cysts index was significantly higher than that of the control group (P<0.05). 3) The serum albumin (ALB) content of experimental group Ⅲ was significantly lower than that of the control group (P<0.01), the serum glucose oxidase (GOD) activity of experimental group Ⅰ was significantly higher than that of the control group (P<0.01), and the activities of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) in serum of experimental group Ⅱ and experimental group Ⅲ were significantly lower than those of experimental group Ⅰ and control group (P<0.05 or P<0.01). 4) The serum immunoglobulin A (IgA) content of experimental group Ⅱ was significantly higher than that of the control group (P<0.01), the serum immunoglobulin G (IgG) content of experimental group Ⅰ and experimental group Ⅱ was significantly higher than that that of the control group (P<0.01), the serum immunoglobulin M (IgM) content of experimental group Ⅰ and experimental group Ⅱ was significantly lower than that of the control group (P<0.05), and the serum interleukin-6 (IL-6) content of experimental group Ⅱ was significantly lower than that that of the control group (P<0.01). In summary, dietary β-glucan can improve the average daily feed intake and average daily gain of meat rabbits, increase the immune organ index, improve the body immunity and digestion, absorption and metabolism ability. In the experiments, dietary suitable β-glucan supplemental level is 0.05%.

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