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Two trials were conducted to study effects of different sources
of dietary fiber on the liver and plasma lipid fractions
contents, hepatic lipogenic-related enzymes activities and the
fecal sterols excretion of white roman goslings. Trial 1,
experimental diets for the six groups were supple- mented with
alfalfa meal, barley bran, rice hull, purified cellu- lose,
lignin and pectin as major fiber source respectively. All of
these diets were formulated into 20% crude protein, 2900 Kcal/
Kg ME and 9% of dietary fiber. Trial 2, the experimental diets
were the same as trial 1 except 1% cholesterol were added. The
results of trial 1, total lipid and triglyceride contents in
the liver of pectin group was significantly lower than the
others (P<0.05), while there was no significantly difference in
the plasma among treatments. The concentration of total
cholesterol in the plasma of the lignin group was significantly
higher than other groups (P<0.05). However, the concentration
of free fatty acids had a opposite tendency. The activities of
hepatic lipogenic-related enzymes was lower in the barley bran
group than the others. In trial 2, dry matter excretion of the
groups supplemented with nature fiber source was significantly
higher than that of the groups supplemented with purified fiber
source (P<0.05). In comparsion with other groups, contents of
neutral sterols and acidic sterols per gram of dry matter in
feces of pectin group was significantly higher (P<0.05).
Lignin and pectin groups had higher cholesterol excretion than
other groups.
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