动物营养学报 >

2019 , Vol. 31 >Issue 6: 2933 - 2940

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.06.055

研究简报 Short Communications

过瘤胃蛋氨酸对黔北麻羊生长性能、养分表观消化率、血浆生化指标及瘤胃发酵的影响

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  • 1. 贵州大学动物科学学院动物营养与饲料科学研究所, 贵阳 550025;
    2. 贵州大学新农村发展研究院, 贵阳 550025;
    3. 贵州省山地畜禽养殖污染控制与资源化技术工程实验室, 贵阳 550025
李海霞(1994-),女,贵州盘县人,本科生,动物科学专业。E-mail:2215844104@qq.com

收稿日期: 2018-09-29

  网络出版日期: 2019-06-17

基金资助

贵大省创字（[2018]015号）；国家自然科学基金项目（30130563）；贵州省科学技术基金项目（黔科合基础[2018]1403）；贵州省发展与改革委员会"贵州省高原山地畜禽养殖污染控制与资源化技术工程实验室"建设项目黔发改高技（[2017]950号）

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Effects of Rumen-Protected Methionine on Growth Performance, Nutrient Apparent Digestibility, Plasma Biochemical Indices and Rumen Fermentation of Qianbeima Goats

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  • 1. Institute of Animal Nutrition and Feed Science, College of Animal Science, Guizhou University, Guiyang 550025, China;
    2. Institute of New Rural Development, Guizhou University, Guiyang 550025, China;
    3. Engineering Key Laboratory of Plateau Mountain Livestock Pollution Control and Resource Reuse Technology of Guizhou Province, Guiyang 550025, China

Received date: 2018-09-29

  Online published: 2019-06-17

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摘要

本试验旨在研究过瘤胃蛋氨酸（RPMet）对黔北麻羊生长性能、养分表观消化率、血浆生化指标及瘤胃发酵的影响。选择18只体况良好、体重[（27.08±2.92）kg]和年龄相近的黔北麻羊，随机分为3组，每组6个重复，每个重复1只羊。对照组饲喂基础饲粮，Ⅰ、Ⅱ组在基础饲粮中每只羊分别添加5、10 g/d的RPMet。预试期14 d，正试期7 d。结果表明：1）各组山羊生长性能指标差异不显著（P>0.05）。2）Ⅱ组粗蛋白质表观消化率显著高于对照组（P<0.05），各组其他养分表观消化率差异不显著（P>0.05）。3）各组血浆生化指标差异不显著（P>0.05）。4）各组瘤胃pH及挥发性脂肪酸浓度差异不显著（P>0.05）。由此可见，在现有饲养标准的基础上，饲粮中添加10 g/d RPMet可提高黔北麻羊粗蛋白质表观消化率，且不影响生长性能、血浆生化指标及瘤胃发酵。

关键词： 过瘤胃蛋氨酸; 表观消化率; 血浆生化指标; 瘤胃发酵; 黔北麻羊

本文引用格式

李海霞, 杨美英, 吴文海, 陈通胜, 彭大荣, 吴文旋 . 过瘤胃蛋氨酸对黔北麻羊生长性能、养分表观消化率、血浆生化指标及瘤胃发酵的影响[J]. 动物营养学报, 2019 , 31(6) : 2933 -2940 . DOI: 10.3969/j.issn.1006-267x.2019.06.055

Abstract

This study was conducted to investigate the effects of rumen-protected methionine (RPMet) on growth performance, nutrient apparent digestibility, plasma biochemical indices and rumen fermentation of Qianbeima goats. Eighteen healthy goats with similar body weight[(27.08±2.92) kg] and age were randomly assigned to 3 groups with 6 replicates per group and 1 goat per replicate. Goats in the control group were fed a basal diet, and the others in groups Ⅰ and Ⅱ were fed the basal diets supplemented with 5 and 10 g/d RPMet per goat, respectively. The pre-experimental period lasted for 14 days, and the experimental period lasted for 7 days. The results showed as follows:1) there were no significant differences in growth performance indices of goats among all groups (P>0.05). 2) The crude protein apparent digestibility of group Ⅱ was significantly higher than that of the control group (P<0.05), and there was no significant difference in other nutrient apparent digestibility among all groups (P>0.05). 3) There were no significant differences in plasma biochemical indices among all groups (P>0.05). 4) There were no significant differences in ruminal pH and volatile fatty acids concentration among all groups (P>0.05). It is suggested that base on the present feeding standard, dietary supplemented 10 g/d RPMet can increase the crude protein apparent digestibility, and have no effects on growth performance, plasma biochemical indices and rumen fermentation of Qianbeima goats.

Key words： rumen-protected methionine; apparent digestibility; plasma biochemical indices; rumen fermentation; Qianbeima goats

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