动物营养学报 >

2019 , Vol. 31 >Issue 6: 2693 - 2700

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.06.030

反刍与草食动物营养 Ruminant and herbivore nutrition

氧化锌对新生犊牛生长性能、免疫功能及直肠微生物菌群的影响

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  • 中国农业科学院北京畜牧兽医研究所, 动物营养学国家重点实验室, 北京 100193
魏婧雅(1993-),女,内蒙古包头人,硕士研究生,从事动物营养与饲料科学研究。E-mail:18702716486@163.com

收稿日期: 2018-11-12

  网络出版日期: 2019-06-17

基金资助

国家重点研发计划（2018YFD0500703）；中国农业科学院科技创新工程（ASTIP-IAS07）；国家高层次人才特殊支持计划

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Effects of Zinc Oxide on Growth Performance, Immune Function and Rectal Microflora of Neonatal Dairy Calves

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  • State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China

Received date: 2018-11-12

  Online published: 2019-06-17

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摘要

本试验旨在研究氧化锌对新生犊牛生长性能、免疫功能及直肠微生物菌群的影响。试验选取24头新生荷斯坦犊牛，随机分成4组，每组6头牛（2公4母）。对照组（Zn-0组）犊牛仅饲喂牛奶和开食料；试验组犊牛在饲喂牛奶和开食料的基础上，每日分别添加40（Zn-40组）、80（Zn-80组）、120 mg（Zn-120组）氧化锌（以锌计）。试验期14 d。结果表明：不同水平氧化锌对犊牛平均日增重、牛奶采食量、开食料采食量、总采食量和料重比无显著影响（P>0.05）。与对照组相比，试验组犊牛腹泻率均有所降低，但差异不显著（P>0.05）。随着饲粮中氧化锌添加水平的增加，犊牛血清中免疫球蛋白G、免疫球蛋白M和免疫球蛋白A含量呈线性升高（P<0.05），直肠内乳酸菌含量呈线性增加（P<0.05），直肠内大肠杆菌含量有线性下降的趋势（0.05 ≤ P<0.10）。综上所述，不同水平氧化锌对新生犊牛生长性能、腹泻率没有显著影响，但与对照组相比，试验组犊牛血清免疫球蛋白含量和直肠中乳酸菌含量增加，直肠中大肠杆菌含量有所降低。

关键词： 犊牛; 氧化锌; 生长性能; 腹泻; 免疫功能; 直肠微生物

本文引用格式

魏婧雅, 马峰涛, 单强, 孙鹏 . 氧化锌对新生犊牛生长性能、免疫功能及直肠微生物菌群的影响[J]. 动物营养学报, 2019 , 31(6) : 2693 -2700 . DOI: 10.3969/j.issn.1006-267x.2019.06.030

Abstract

This experiment was conducted to study the effects of zinc oxide on growth performance, immune function and rectal microflora of neonatal dairy calves. Twenty-four neonatal Holstein dairy calves were randomly allotted to four groups with 6 calves per group (2 males and 4 females). Calves in the control group (Zn-0 group) were fed only milk and starter diet; calves in experimental groups were fed milk and starter diet supplemented with 40 (Zn-40 group), 80 (Zn-80 group) and 120 mg zinc oxide (Zn-120 group) (as zinc) everyday, respectively. The trial lasted for 14 days. The results showed that different levels of zinc oxide had no significant effect on the average daily gain, milk intake, starter intake, total feed intake and feed to gain ratio of calves (P>0.05). Compared with the control group, the diarrhea rate of experimental groups was reduced, but the difference was not significant (P>0.05). With the dietary zinc oxide supplemental level increased, the contents of immunoglobulin G, immunoglobulin M and immunoglobulin A in serum of experimental groups were linearly increased (P<0.05), the rectal Lactobacillus content was linearly increased (P<0.05), and the rectal Escherichia coli content was tended to decrease linearly (0.05 ≤ P<0.10). In conclusion, different levels of zinc oxide have no effects on the growth performance and the diarrhea rate of neonatal dairy calves. However, compared with the control group, the serum immunoglobulin contents and rectal Lactobacillus content of experimental groups are increased, and rectal Escherichia coli content is decreased.

Key words： dairy calves; zinc oxide; growth performance; diarrhea; immune function; rectal microflora

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