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ファイル
言語
英語
著者
藤原 勉
内容記述(抄録等)
In order to investigate the effect of orally supplemented urea on utilization of low-quality roughage in sheep, digestion and nitrogen balance trials were conducted using 3 Japanese Corriedale rams fed a mixed hay supplemented with urea at 3 levels, i. e., 0, 15 and 30% of dietary nitrogen from hay, according to a 3X3 Latin square design. The results obtained were as follows; 1) The digestibility of crude protein was clearly (P<0.05) increased with an increase of urea supplemented orally. 2) Urinary nitrogen excretion was fairly increased with an increase of oral urea supplement, and thus, the retained nitrogen increased a little after supplementing urea at a level of 30% dietary nitrogen. 3) Ruminal ammonia level clearly (P<0.05) increased with an increase of oral urea supplement. On the contrary, the level of ruminal VFAs tended to be lower after feeding hay with urea than after feeding hay alone. 4) The concentration of blood urea-nitrogen tended to increase with increase in supplemented urea, and the plasma total protein did not change with an oral urea supplement.
掲載誌名
島根大学農学部研究報告
27
開始ページ
65
終了ページ
72
ISSN
0370940X
発行日
1993-12-20
NCID
AN00108015
出版者
島根大学農学部
出版者別表記
Shimane University, Faculty of Agriculture
資料タイプ
紀要論文
部局
生物資源科学部
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