Degradation of pectic polysaccharides in forage chicory (Cichorium intybus L.) by rumen bacteria

被引：3

作者：

Sun, X. Z. ^{[1
,2
]}

Hoskin, S. O. ^{[1
]}

Joblin, K. N. ^{[2
]}

Andrew, I. G. ^{[3
]}

Harris, P. J. ^{[4
]}

机构：

[1] Massey Univ, Inst Vet Anim & Biomed Sci, Palmerston North, New Zealand

[2] AgResearch, Grasslands Res Ctr, Palmerston North, New Zealand

[3] Massey Univ, Inst Mol Biosci, Palmerston North, New Zealand

[4] Univ Auckland, Sch Biol Sci, Auckland 1, New Zealand

来源：

JOURNAL OF ANIMAL AND FEED SCIENCES | 2007年 / 16卷

关键词：

pectic polysaccharides; chicory; degradation; Lachnospira multiparus; Fibrobacter succinogenes; homogalacturonan;

D O I：

10.22358/jafs/74463/2007

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

In vitro degradation of fresh chicory (L.) leaves were studied using rumen bacteria Lachnospira multiparus (pectinolytic) and Fibrobacter succinogenes (cellulolytic). L. multiparus did not release cellulose- and "hemicellulose"-associated monosaccharides glucose, xylose or mannose, but released the rhamnogalacturonan-associated monosaccharides arabinose, galactose and rhamnose, and rapidly released homogalacturonan-associated monosaccharides uronic acids. F. succinogenes also released uronic acids extensively, but at a slower rate than L. multiparus and also released glucose, xylose and mannose. F succinogenes released these monosaccharides sequentially in the order uronic acid, rhamnose, and then arabinose and galactose together, suggesting that pectic polysaccharides degrade faster than cellulose and "hemicelluloses", among pectic polysaccharides homogalacturonan faster than rhamnogalacturonan I. It appears the degradation of pectic polysaccharides by rumen bacteria may contribute significantly to the high digestibility of forage chicory.

引用

页码：101 / 106

页数：6

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