NITROGEN-EXCRETION BY SHEEP FED LOW-PROTEIN ROUGHAGE DIETS

被引：4

作者：

ALAWA, JP

机构：

[1] Department of Animal Science, Ahmadu Bello University, Zaria

来源：

SMALL RUMINANT RESEARCH | 1991年 / 6卷 / 03期

关键词：

D O I：

10.1016/0921-4488(91)90163-K

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

Nitrogen metabolism of 4- and 16-month-old sheep fed barley straw diets supplemented with low levels of rumen-degradable nitrogen ranging from 0.64 to 2.3 g in untreated soybean meal (SBM) or formaldehyde-treated soybean meal (FT-SBM) was studied. Faecal nitrogen loss was slightly higher for FT-SBM than SBM in 16-month-old sheep (P > 0.05). Urinary nitrogen loss was slightly higher for FT-SBM than SBM (P > 0.05). Nitrogen excretion showed significant reductions over time (P < 0.02) in urine, but not in faeces for SBM and FT-SBM. This was accompanied by corresponding improvements in the amounts of nitrogen absorbed and retained.

引用

页码：279 / 284

页数：6

共 14 条

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