动物营养学报 >

2014 , Vol. 26 >Issue 7: 1981 - 1987

DOI: https://doi.org/10.3969/j.issn.1006-267x.2014.07.033

研究简报 Short Communications

5种常用粗饲料的肉羊瘤胃外流速率

  • 陈晓琳 ,
  • 孙娟 ,
  • 陈丹丹 ,
  • 王波 ,
  • 屠焰 ,
  • 刁其玉
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  • 1. 中国农业科学院饲料研究所, 农业部生物饲料重点实验室, 北京 100081;
    2. 青岛农业大学经济草本植物应用研究所, 青岛 266109

收稿日期: 2014-01-01

  网络出版日期: 2014-07-01

基金资助

公益性行业（农业）科研专项“秸秆饲料生物转化技术研究与示范”（20120304202）；国家十二五支撑计划“肉羊健康养殖模式构建与示范”（2011BAZ01734）

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Ruminal Outflow Rates of Five Kinds of Regular Roughages in Meat Sheep

  • CHEN Xiaolin ,
  • SUN Juan ,
  • CHEN Dandan ,
  • WANG Bo ,
  • TU Yan ,
  • DIAO Qiyu
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  • 1. Key Laboratory of Feed Biotechnology of Ministry of Agriculture, Feed Research Institute, The Chinese Academy of Agricultural Sciences, Beijing 100081, China;
    2. Institute of Economic Herb Plants, Qingdao Agricultural University, Qingdao 266109, China

Received date: 2014-01-01

  Online published: 2014-07-01

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摘要

本研究旨在测定5种常用粗饲料（羊草、麦秸、苜蓿、地瓜秧和玉米秸）的肉羊瘤胃外流速率。试验选用3只体况良好、体重[（65.0±1.0）]相近并装有永久性瘤胃瘘管的杜寒F1代去势公羊，利用重铬酸钾溶液标记饲料，火焰原子吸收光谱方法测定粪中铬的含量，通过数学方程计算5种粗饲料的瘤胃外流速率。结果表明：标记的粗饲料因种类不同，铬在粪中的排放高峰期不同，主要集中在20~28 h。不同粗饲料的外流速率差异较大，羊草、麦秸、苜蓿、地瓜秧和玉米秸的瘤胃外流速率分别为3.92%/h、3.07%/h、4.30%/h、4.63%/h和3.16%/h，且与饲料原料中粗蛋白质的含量有强相关（R2=0.903 5，P=0.013 1）。总之，粗饲料种类不同，瘤胃的外流速率不同。本研究得出的羊草、麦秸、苜蓿、地瓜秧和玉米秸肉羊瘤胃外流速率可在相关研究中应用。

关键词： 肉羊; 瘤胃降解率; 外流速率; k值; 粗饲料; 秸秆

本文引用格式

陈晓琳 , 孙娟 , 陈丹丹 , 王波 , 屠焰 , 刁其玉 . 5种常用粗饲料的肉羊瘤胃外流速率[J]. 动物营养学报, 2014 , 26(7) : 1981 -1987 . DOI: 10.3969/j.issn.1006-267x.2014.07.033

Abstract

This experiment was conducted to determine the ruminal outflow rates of five kinds of regular roughages (Chinese wildrye, wheat straw, alfalfa, sweet potato vine and corn stalk) in meat sheep. Three healthy emasculated Dorper×Han crossbred F1 male sheep with similar body weight [（65.0±1.0）] fitted with permanent ruminal fistulas were selected in this experiment. Five roughages were mordanted by potassium dichromate solution, flame atomic absorption spectrometry was used to determine chromium content of fecal samples, and the ruminal outflow rates of five kinds of roughages were calculated with mathematical equations. The results showed as follows: chromium in different mordanted roughages were expelled from feces at different crest-time and focused on the 20 to 28 h. There were differences in the outflow rates of different roughages. The outflow rates of Chinese wildrye, wheat straw, alfalfa, sweet potato vine and corn stalk were 3.92%/h, 3.07%/h, 4.30%/h, 4.63%/h and 3.16%/h, respectively, and the outflow rate had a strong correlation with the crude protein content in feed ingredients (R2=0.903 5,P=0.013 1). In conclusion, different kinds of roughages have different outflow rates from rumen. The outflow rates of Chinese wildrye, wheat straw, alfalfa, sweet potato vine and corn stalk in the study can be used in further related researches.

Key words： meat sheep; ruminal degradability; outflow rate; k value; roughage; straw

参考文献

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