02583nas a2200265 a 450000500170000000800410001703500150005810000260007324501100009926000660020930000230027549000270029850001500032550200580047552013760053365000260190965000390193565000230197470000350199770000530203270000430208571000650212881000590219385600650225220260817173146.0220301s2020    th ar  |||    000   eng d  a.b123819501 aMore, Sagar Ravindra 10aColour enhancement of the Siamese fighting fish betta splendens by incorporation of spirulina in its diet  aPathum Thani, Thailand:bAsian Institute of Technology,c2020  a75 leaves :bill. 1 aThesis ;vno. AQ-20-05  aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Aquaculture and Aquatic Resources Management  aThesis (M. Sc.) - Asian Institute of Technology, 2020  aOne of the main factors on which the market value of the ornamental fishes depends are its  colours. Enhancement of the colour of the fishes increases its market price. However, fishes  cannot synthesize carotenoids by themselves and need to obtain them through their dietary  intake. In this study, a popular aquarium fish, the Siamese fish (Betta splendens) was fed  diets incorporated with varying levels of spirulina. Six diets were made as treatments; T0  with no supplementation of carotenoids, T1 with 20ppm astaxanthin, T2, T3, T4 and T5  with 30, 60, 90 and 120ppm spirulina respectively. The pigmentation of the fish skin was  compared by doing the carotenoid analysis in the fish skin and the colour intensity by using  the rapid image colour summarizer software. The skin of the fish fed with 120 ppm  spirulina (T 5) had the highest carotenoid content (5.02æg/g±0.32) followed by the fish fed  with 90 ppm spirulina,T4 (3.36 æg/g ±0.34). Other doses did not differ with control.  Inclusion of spirulina significantly enhanced the color of the Siamese fighting fish at  highest dose (120 ppm) but had no significant difference (P>0.05) in the growth rate during  the experimental trial. Further, more extensive work with higher doses needs to be done to  find out the optimum spirulina levels required to enhance the colour of the Siamese fighting  fish.  0aOrnamental fish trade 0aSiamese fighting fishxLife cycles 0aAquaculturezNepal1 aKrishna R. Salin,eChairperson1 aYakupitiyage, Amararatne,eExamination Committee1 aBhujel, Ram C.,eExamination Committee2 aAsian Institute of Technology Fellowship,eScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. AQ-20-05  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B15908