In a cross-over study with adult cats the effect on nitrogen (N) excretion
of a diet supplemented with fructooligosaccharides (FOS) was compared with
a diet supplemented with an equal amount of fructose and glucose. FOS raise
d N excretion with faeces by 26% (P < 0.05) and non-significantly lowered N
excretion wit, h urine by 5%. Thus, there was a shift in N excretion from
urine to faeces. The amount of faecal dry matter was significantly higher (
by 23.3%) when FOS was consumed.