COMPARISON OF IN-SITU DEGRADATION OF CELL-WALL CONSTITUENTS, NITROGEN AND NITROGEN LINKED TO CELL-WALLS FOR FRESH LUCERNE AND 2 LUCERNE SILAGES

被引：15

作者：

AUFRERE, J

BOULBERHANE, D

GRAVIOU, D

DEMARQUILLY

机构：

来源：

ANNALES DE ZOOTECHNIE | 1994年 / 43卷 / 02期

关键词：

RUMEN; NITROGEN; CELL WALL; DEGRADABILITY;

D O I：

10.1051/animres:19940202

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 situ degradation was studied on fresh lucerne and 2 silages prepared from fresh forage, one without added preservative, and the other with formic acid. Dry matter degradability is comparable for the fresh forage (68.1 %) and silage with formic acid (66. 1 %) and lower for silage without added preservative (58.3%). The differences of nitrogen degradability between the 3 forages are small, 84.6%, 85.1% and 89.3% for fresh forage, silage without additive and silage with formic acid, respectively. The nitrogen linked to cell-wall residues represents a low proportion and does not have a great effect on degradability. However, on average the nitrogen of NDF residue (NDFN) and the ADF residue (ADFN) were degraded in the same manner whatever the forage. Some of the nitrogen linked to ADF appeared to be made up of a glycoprotein (extensin) which was in part degraded in the rumen.

引用

页码：125 / 134

页数：10

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