FT Vol.57(3)

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Browsing FT Vol.57(3) by Author "Abubakr, Adnan"

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    Effect of Supplementation of Beetroot Waste Extract on the Pigmentation of Puntius conchonius (Hamilton, 1822)
    (Society of Fisheries Technologists (India), 2020) Naik, Asma Ahad; Shah, Tasaduq H.; Asimi, Oyas Ahmad; Bhat, Farooz A.; Balkhi, M. H.; Abubakr, Adnan; Gul, Sobiya
    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.