PAKISTAN JOURNAL OF ZOOLOGY, cilt.49, ss.663-668, 2017 (SCI İndekslerine Giren Dergi)
This study analyzes the effect of Nannochloropsis oculata and Porphyridium cruentum as natural pigment sources on skin color of tomato clownfish, Amphiprion frenatus. Two groups, each of 6 fish were fed on feed containing (69.8 +/- 9.158 mg.g(-1))N oculata (Group A), and 67.21 +/- 7.068 mg.g(-1) of P. cruentum (Group B). The third group (Group C) was fed on control basal diet (34.93 +/- 29.07 mg.g(-1)). Total carotenoid content of fish skin was determined at 30-day intervals. At the end of the experiment the highest weight gain was found to be 1.73 +/- 0.37g in Group B, whereas the lowest performance (1.29 +/- 0.38 g) was received in Group C. The best feed conversion ratio was found in at Group B. The total carotenoid content of skin of fish were found to be 0.77 +/- 0.61 ug.g(-1) on the initial day in the experimental group. As a result of the measurements performed on the 120(th) day, the pigment values were determined as 30.39 +/- 0.39 mu g.g(-1) in Group A, 39.07 +/- 1.12 mu g.g(-1) in Group B and 35.68 +/- 10.69 mu g.g(-1) in the Group C. Group B pigment source is more effective on the color of tomato clownfish A. frenatus.