In present study, thiobarbituric acid (TBARS)
properties (mg malonaldehyde kg -1 )
in rainbow trout (Oncorhynchus mykiss) fed with standard
diets supplemented with canthaxanthin, astaxanthin and red pepper meal besides
control group were investigated. In experiment, total of 375 rainbow trout with
an initial average weight of 154 g were fed by dividing
into 4 groups.
The fishes
were fed for 60 days with four diets (canthaxanthin70 mg kg
-
1
, astaxanthin 50 mg
kg
-
1
, red pepper meal 765 mg kg
-
1
and control). After the feeding period, the
fishes in diet groups
were evaluated in terms of
total carotenoid concentration
and TBARS.
At the end of the trial, fodder supplemented with canthaxanthin,
astaxan
thin and red pepper meal caused
carotenoid
accumulation over
6 mg kg
-1
concentration in the muscle tissues of the
fishes.
Frozen storage (at
-
30 ºC) of
gutted, cleaned and glazed raw fishes for 12 months significantly reduced the
total carotenoid concentration and TBARS value