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Journal of Entomology and Zoology Studies
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P-ISSN: 2349-6800, E-ISSN: 2320-7078

Journal of Entomology and Zoology Studies

2018, Vol. 6, Issue 6
Effect of natural β-carotene from-carrot (Daucus carota) and Spinach (Spinacia oleracea) on colouration of an ornamental fish - swordtail (Xiphophorus hellerii)

Minal S Wagde, Subodh K Sharma, Bhanu K Sharma, Amrita P Shivani and Naresh R Keer

The present experiment was conducted to evaluate the impact of two natural b-carotene vegetable sources viz., carrot (Daucus carota) and spinach (Spinacia oleracea) for inducing colouration in an ornamental fish swordtail (Xiphophorus hellerii). The Experimental fish were cultured for 35 days in aquarium tanks. The experimental diets were prepared with two natural vegetable sources viz. carrot (Daucus carota) and spinach (Spinacia oleracea) and fed to the fish once a day at 3 percent of their body weight to supply 20, 25 and 30 mg of b-carotene individually per 100 g of diet. There were 6 experimental diets three for each b-carotene sources and 1 common control diet (devoid of b-carotene). The water quality in the entire aquarium was maintained periodically. The proximate analysis of the experimental diet was also carried out but doesn’t depict any significant changes in their composition. The colour intensity and prominence of orange colour increased in the fish with diets enriched with natural b-carotene sources viz., carrot (T1, T2 and T3) and spinach (T4, T5 and T6). Red-orange colour pigmentation was highest in fish fed with a carrot. The hue angle (h°) and yellow-orange colour intensity was found significantly high (P<0.05) in fish fed with spinach in T4 (h° = 58.33). In the case of carrot h° value was found highest in T1 (h° = 43.81) where the orange colour intensity was found higher. The maximum luminosity (L*) was found in T2 (20.81). The highest red colour intensity red (a*) value was found in T6 (4.22) whereas, the maximum yellow colour intensity (b*) value was noted in T4 (5.34). The maximum colour saturation i.e. chroma (C*) was observed in T4 (6.29) in case of spinach and in case of carrot it was maximum in T1 (5.81). The result revealed that the fish fed with spinach have developed more yellow colour and fish fed with carrot developed red colour. From this study, it could be concluded that the easily available natural β-carotene sources incorporated feed as a colour enhancer can be prepared at a lower cost.
Pages : 699-705 | 947 Views | 408 Downloads


Journal of Entomology and Zoology Studies Journal of Entomology and Zoology Studies
How to cite this article:
Minal S Wagde, Subodh K Sharma, Bhanu K Sharma, Amrita P Shivani, Naresh R Keer. Effect of natural β-carotene from-carrot (Daucus carota) and Spinach (Spinacia oleracea) on colouration of an ornamental fish - swordtail (Xiphophorus hellerii). J Entomol Zool Stud 2018;6(6):699-705.

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