Biology Reference
In-Depth Information
Table 31.2
Body weight changes of experimental rats for 9 weeks
Variables
Control
Arg
Tau
Arg + Tau
Initial weight (g)
75.9 ± 2.9
1, a, 2
75.4 ± 3.1
a
75.1 ± 2.9
a
75.7 ± 2.5
a
Final weight (g)
301.9 ± 21.5
a
296.9 ± 20.1
a
307.8 ± 19.4
a
303.9 ± 23.2
a
Weight gain (g)
225.9 ± 22.5
a
221.4 ± 18.5
a
232.6 ± 18.8
a
228.2 ± 22.3
a
1
Mean ± SD
2
Values with different superscripts within the row are significantly different at
p
< 0.05 by Duncan's
multiple range test
Table 31.3
Food intake and FER of rats fed during experimental period
Variables
Control
Arg
Tau
Arg + Tau
Food intake (g/day)
19.91 ± 1.52
1, a, 2
19.37 ± 2.13
a
20.15 ± 1.96
a
19.50 ± 1.70
a
FER
0.18 ± 0.02
a
0.18 ± 0.02
a
0.19 ± 0.02
a
0.19 ± 0.02
a
1
Mean ± SD
2
Values with different superscripts within the row are significantly different at
p
< 0.05 by Duncan's
multiple range test
the weight gain and food intake of the animals. Table
31.2
shows that all experi-
mental groups were fed diets containing Arg, Tau, and Arg + Tau. No difference
was observed in weight of rats because of diet. Food intake was not affected by
diet. FER of the rats were similar.
31.3.2
Serum Ca and P Concentrations
The concentrations of serum Ca and P were not significantly different among the
experimental groups (Table
31.4
). Mean serum calcium was 9.41 ± 0.39 mg/dl,
9.50 ± 0.16 mg/dl, 9.59 ± 0.30 mg/dl, and 9.44 ± 0.30 mg/dl for control, Arg, Tau,
and Arg + Tau, respectively. Mean serum phosphate was 6.34 ± 0.86 mg/dl,
6.60 ± 0.42 mg/dl, 6.36 ± 0.29 mg/dl, and 6.98 ± 0.76 mg/dl for control, Arg, Tau,
and Arg + Tau, respectively. The mean serum calcium and phosphate concentrations
were within the normal range.
31.3.3
Urine Calcium, Phosphorus, Deoxypyridinoline,
Creatinine, and Cross-Link Value
Urinary calcium and phosphate excretion were not significantly different
(Table
31.5
). Arginine and/or taurine supplementation did not have a measurable
effect on urinary calcium and phosphate excretion. Urinary calcium excretion in the
experimental diet group tended to be less in the arginine- or taurine-supplemented
group than in the un-supplemented group, although urinary calcium excretion was
not significantly different between the four groups. The amount of urine calcium
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