Effect of Supplementation of Beetroot Waste Extract on the Pigmentation of Puntius conchonius (Hamilton, 1822)
Effect of Supplementation of Beetroot Waste Extract on the Pigmentation of Puntius conchonius (Hamilton, 1822)
Date
2020
Authors
Naik, Asma Ahad
Shah, Tasaduq H.
Asimi, Oyas Ahmad
Bhat, Farooz A.
Balkhi, M. H.
Abubakr, Adnan
Gul, Sobiya
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India)
Abstract
Attractive colouration is one of the most important
quality attributes of ornamental fish for consumer
preference. The present study was conducted to
investigate the effect of natural source of carotenoid
pigments from beetroot (Beta vulgaris) waste on total
carotenoid of rosy barb (Puntius conchonius). A total
of sixty fishes of average body weight (5.5±0.10 g)
were selected randomly and distributed into four
treatments in triplicate (5 fishes per tank). Four
isonitrogenous (32.37±0.48% crude protein) diets,
T1, T2 and T3 were prepared with 0.5%, 1.0% and
1.5% of beetroot waste extract respectively along
with a control diet without supplementation of
beetroot waste extract. Body carotenoid was significantly
enhanced (p<0.05) by the dietary supplements,
increasing linearly with increase in beetroot
waste extract (BRWE) concentration. Carotenoid
concentration in the muscle was recorded at
10.88+0.08 μg g-1 wet wt tissue for T3 treatment,
9.81+0.2208 μg g-1 wet wt tissue for T2 and
7.38+0.15108 μg g-1 wet wt tissue for T1 as against
4.62+0.0808 μg g-1 wet wt tissue for the control.
Changes in chromatophore number in the scales
were observed for different concentration of BRWE.
The pigmentation was found to be concentration
dependent and darkening of scales appeared more
with increased number of pigment granule. No
effect of BRWE was observed on the quality of water
(p>0.05) and all water quality parameters were
found to be within acceptable ranges in all the
treatments Present results indicate that economical
and naturally available carotenoid source such as beetroot waste extract can be incorporated into the
diet of rosy barb (P. conchonius) to enhance
pigmentation in order to improve the ornamental
value of the fish which otherwise, have little
commercial value.
Description
Keywords
Beetroot waste extract, Beta vulgaris, Puntius conchonius, pigmentation, carotenoids