动物营养学报 >

2018 , Vol. 30 >Issue 8: 3026 - 3032

DOI: https://doi.org/10.3969/j.issn.1006-267x.2018.08.019

反刍动物营养 Ruminant nutrition

不同锌源对新生犊牛生长性能、血清激素及免疫指标的影响

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  • 1. 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;
    2. 北京中地种畜有限公司, 北京 100028
郝丽媛(1992-),女,山西晋中人,硕士研究生,从事动物营养与饲料科学研究。E-mail:18201135181@163.com

收稿日期: 2018-01-18

  网络出版日期: 2018-08-18

基金资助

国家重点研发计划（2016YFD0500507）；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 Different Zinc Sources on Growth Performance, Serum Hormone and Immune Indices of Newborn Calves

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  • 1. State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
    2. Beijing Sino Farm Co., Ltd., Beijing 100028, China

Received date: 2018-01-18

  Online published: 2018-08-18

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摘要

本试验旨在研究不同锌源对新生犊牛生长性能、血清激素及免疫指标的影响。试验选取36头新生荷斯坦母犊牛，随机分成3组，每组12头。对照组无添加，试验组分别每日每头添加457 mg蛋氨酸锌和104 mg氧化锌（均相当于80 mg锌），蛋氨酸锌和氧化锌混合到牛奶中进行饲喂。试验进行至犊牛生后14 d结束。犊牛4日龄时添加开食料，每天记录犊牛采食量和腹泻情况，初生和15日龄晨饲前测量犊牛体高、体斜长、胸围和体重；15日龄晨饲前采集犊牛血液样品，测定血清中免疫球蛋白和激素含量。结果表明：1）与对照组相比，添加蛋氨酸锌显著提高了犊牛平均日增重（P<0.05），显著降低了犊牛腹泻率（P<0.05）。不同锌源对犊牛平均日采食量、体高总增长、体斜长总增长和胸围总增长均无显著影响（P>0.05）。2）与对照组相比，添加氧化锌和蛋氨酸锌均可显著降低犊牛血清中胰岛素的含量（P<0.05）。3）与对照组相比，添加氧化锌显著提高了犊牛血清中免疫球蛋白G和免疫球蛋白M含量（P<0.05）。各组间犊牛血清中免疫球蛋白A含量差异不显著（P>0.05）。综上所述，给新生犊牛补充蛋氨酸锌可以有效促进犊牛生长，降低腹泻率；而补充氧化锌则有助于提高犊牛机体免疫功能。

关键词： 新生犊牛; 蛋氨酸锌; 氧化锌; 生长性能; 腹泻; 血清激素; 免疫功能

本文引用格式

郝丽媛, 马峰涛, 魏婧雅, 孙鹏, 张开展 . 不同锌源对新生犊牛生长性能、血清激素及免疫指标的影响[J]. 动物营养学报, 2018 , 30(8) : 3026 -3032 . DOI: 10.3969/j.issn.1006-267x.2018.08.019

Abstract

The objective of this trial was to investigate the effects of different zinc sources on growth performance, serum hormone and immune indices of newborn calves. Thirty-six newborn Holstein dairy female calves were randomly assigned to 3 groups with 12 calves per group. Calves in control group were no addition, and others in experimental groups were added 457 mg zinc methionine and 104 mg zinc oxide (equivalent to 80 mg zinc) per calf every day, respectively. Zinc methionine and zinc oxide were mixed with milk and fed directly to the calves. The whole experiment lasted for 14 days. Starter diet was supplemented to all calves on the fourth day after birth. Incidents of diarrhea and feed intake of individual calf were recorded every day. Calves were measured for body height, body slant length, bust and weight after birth and before feeding on the morning of 15 days of age. Meanwhile, blood samples were taken from all the calves before feeding on the morning of 15 days of age, and the contents of immunoglobulin and hormone in the serum were measured. The results showed as follows:1) compared with the control group, dietary supplementation of zinc methionine significantly increased the average daily gain of calves (P<0.05), significantly decreased the diarrhea rate of calves (P<0.05). Different zinc sources did not significantly influence the average daily feed intake, total body height gain, total body slant gain and total bust gain of calves (P>0.05). 2) Compared with the control group, dietary supplementation of zinc methionine and zinc oxide significantly decreased the serum insulin content of calves (P<0.05). 3) Compared with the control group, dietary supplementation of zinc oxide significantly increased the contents of immunoglobulin G and immunoglobulin M in serum of calves (P<0.05). And no significant difference was observed in serum immunoglobulin A content of calves among all groups (P>0.05). In summary, supplementation of zinc methionine to newborn calves effectively promotes calf growth, and reduces the diarrhea rate, while supplementation of zinc oxide helps to improve the immune function of calves.

Key words： newborn calves; zinc methionine; zinc oxide; growth performance; diarrhea; serum hormone; immune function

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