动物营养学报 >

2019 , Vol. 31 >Issue 12: 5551 - 5561

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.12.021

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

绵羊瘤胃乙酸和丁酸的产生、吸收和流通规律及可代谢生脂物质的测定

  • 杜瑞平 ,
  • 卢德勋 ,
  • 高民
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  • 内蒙古自治区农牧业科学院动物营养与饲料研究所, 呼和浩特 010031
杜瑞平(1979-),女,内蒙古包头人,副研究员,博士,研究方向为反刍动物营养调控理论与技术。E-mail:duruiping1989@163.com

收稿日期: 2019-05-21

  网络出版日期: 2019-12-13

基金资助

内蒙古自治区“十五”科技重大专项“草地发展与草地合理利用关键技术集成研究与产业化示范专项-禁牧舍饲条件下不同类型区的牛羊饲草料营养供给技术集成研究与示范”（20010117）

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Production, Absorption and Passage of Ruminal Acetate and Butyrate in Sheep and Measurement of Dietary Metablizable Lipogenous Substances

  • DU Ruiping ,
  • LU Dexun ,
  • GAO Min
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  • Animal Nutrition Institute of Agriculture and Animal Husbandry Academy of Inner Mongolia, Huhhot 010030, China

Received date: 2019-05-21

  Online published: 2019-12-13

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摘要

本试验旨在研究1.0 M能量水平条件下绵羊瘤胃乙酸和丁酸的产生、吸收和流通规律并得到可代谢生脂物质（MLS）的测定值。选用6只体况良好、1.5岁左右、体重相近的安装有永久性瘤胃瘘管和近端十二指肠瘘管的内蒙古半细毛羯羊，通过模拟连续饲喂从而获得瘤胃稳态条件，借助非同位素标记乙酸、丁酸溶液的启动－连续灌注技术进行MLS的测定。结果表明：1.0 M能量水平条件下，试验羊瘤胃乙酸﹑丁酸的基本产生速率分别为61.66和23.04 mmol/h；吸收速率分别为47.15和17.86 mmol/h，流通速率分别为14.52和5.19 mmol/h，吸收率分别为76.33％和77.52％。本研究条件下，饲粮每日提供MLS为135.69 g。

关键词： 绵羊; 乙酸; 丁酸; 产生; 吸收; 流通; 可代谢生脂物质

本文引用格式

杜瑞平 , 卢德勋 , 高民 . 绵羊瘤胃乙酸和丁酸的产生、吸收和流通规律及可代谢生脂物质的测定[J]. 动物营养学报, 2019 , 31(12) : 5551 -5561 . DOI: 10.3969/j.issn.1006-267x.2019.12.021

Abstract

This experiment was conducted to study the production, absorption and passage of ruminal acetate and butyrate in sheep and measure the dietary metabolizable lipogenous substances (MLS) under 1.0 M energy level. Six Inner Mongolian semifine-wool wethers (1.5-old-year) and fitted with a ruminal and a duodenum cannula were used to measure the MLS by simulating continuous feeding and pulse-continuous infusion technology of non-isotope labeled acetate and butyrate solutions. Rumen steady state was obtained through eight equal portions feeding daily. The results showed that under 1.0 M energy level, the principal production rate of ruminal acetate and butyrate in sheep were 61.66 and 23.04 mmol/h, respectively; the absorption rate of ruminal acetate and butyrate were 47.86 and 17.86 mmol/h, respectively; the passage rate of ruminal acetate and butyrate were 14.52 and 5.19 mmol/h, respectively; the fractional absorption rate of ruminal acetate and butyrate were 76.33% and 77.52%, respectively. Dietary MLS measured in this experiment is 135.69 g/d.

Key words： sheep; acetate; butyrate; production; absorption; passage; metabolizable lipogenous substances

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