2014年6月
Transfer of blood urea nitrogen to cecal microbes and nitrogen retention in mature rabbits are increased by dietary fructooligosaccharides
Animal Science Journal
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- 巻
- 85
- 号
- 6
- 開始ページ
- 671
- 終了ページ
- 677
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1111/asj.12205
To estimate the effect of fructooligosaccharides (FOS) on N utilization, seven mature rabbits were fed a diet containing 5% glucose or FOS for 8 days. During the last 5 days, total feces and urine were collected to measure N levels (Experiment 1). To examine N transfer from the blood to cecal microbes, eight rabbits were fed the same diets as in Experiment 1. After 9 days of feeding, 2g of glucose or FOS was given orally. Two hours later 20mg of 15N-urea was administered via the ear vein, and 1h later cecal and blood samples were collected (Experiment 2). Urinary N excretion was lowered by FOS feeding (P<0.05). Total bacterial N and 15N in the cecum was significantly higher in FOS-fed animals (P<0.05). Urea N in the cecum was lower in FOS-fed rabbits (P<0.05). Similarly, 15N atom % excess of cecal urea N was also lower in FOS-fed rabbits than in glucose-fed rabbits. These results suggest that FOS in the diet increases the transfer of blood urea N to the cecum for bacterial synthesis, thereby increasing N utilization. © 2014 Japanese Society of Animal Science.
- リンク情報
- ID情報
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- DOI : 10.1111/asj.12205
- ISSN : 1344-3941
- eISSN : 1740-0929
- PubMed ID : 24798025
- SCOPUS ID : 84901850725