Transfer of blood urea nitrogen to cecal microbes and nitrogen retention in mature rabbits are increased by dietary fructooligosaccharides

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 microb...

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Bibliographic Details
Published in:Animal science journal 2014-06, Vol.85 (6), p.671-677
Main Authors: Min, Xiao, Xiao, Jin, Kawasaki, Kiyonori, Li, Xiao, Sakaguchi, Ei
Format: Article
Language:English
Subjects:
Animal Feed - analysis
Animals
Bacteria - growth & development
Bacteria - metabolism
bacterial N
Blood
blood urea
Blood Urea Nitrogen
Cattle
Cecum
Cecum - microbiology
Diet
Dietary Carbohydrates - administration & dosage
ears
Experiments
feces
Feeding
Fructooligosaccharides
Glucose
Hogs
mature rabbit
Microorganisms
N retention
Nitrogen
Nitrogen - metabolism
Nitrogen isotopes
Oligosaccharides - administration & dosage
Rabbits
Rabbits - metabolism
Rabbits - microbiology
Urea
urea nitrogen
Urine
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Summary: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, 2 g of glucose or FOS was given orally. Two hours later 20 mg of ¹⁵N‐urea was administered via the ear vein, and 1 h later cecal and blood samples were collected (Experiment 2). Urinary N excretion was lowered by FOS feeding (P 
ISSN:1344-3941
1740-0929
DOI:10.1111/asj.12205