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    Growth and Pigmentation of Goldfish (Carassius auratus L, 1758) Fed on a Diet Supplemented with Purslane (Portulaca sp.) Extract
    (Zoological Soc Pakistan, 2022) Sahin, Dilek; Oz, Meryem; Aral, Orhan; Bahtiyar, Mehmet; Tasci, Selda
    This study aimed to investigate the effects of the purslane extract on growth and pigmentation of goldfish (Carassius auratus L, 1758). The study was carried out with 4 experimental groups of which composed of control (0%, T0) and different amount of purslane plant extracts (3%, T3; 6%, T6; 9%, T9) and each group had 3 replicates. The fish with an average live weight of 2.55 +/- 0.08 g were selected randomly from a fish stock of 250 fish and were 13 fish were placed in each aquarium (15 L). The growth, survival and coloring parameters were determined at the end of 60th day of the study. The best growth parameters were recorded in the T9 group. The best weight gain, specific growth rate and feed conversation ratio values occurred at 0.815 g, 0.462 % and 0.86, respectively were observed in the group fed with 9% of purslane extract. The survival rate parameters indicated no death in any experimental group of goldfish fry. The purslane extract had a positive effect on coloring, and the highest pigmentation for goldfish was obtained in T6 and T9 (Hue (Habo) angle values (86.73 +/- 0.32 and 77.64 +/- 0.47, respectively). The results revealed that purslane extract had a positive effect on the growth and coloring parameters of goldfish. The results recorded in this study can be used database in aquaculture for future studies carried out in aquaculture.
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    Use of purslane (Portulaca sp.) extract as a potential feed additive on growth parameter and skin pigmentation for blue streak hap, Labidochromis caeruleus (Fryer, 1956)
    (Wiley, 2022) Sahin, Dilek; Oz, Meryem; Aral, Orhan; Bahtiyar, Mehmet; Tasci, Selda
    Purslane (Portulaca sp.) is a widely available succulent which could be used as an additive in fish feed owing to its nutritious nature and rich pigment content. In the present study, the effects of inclusion of purslane extract in fish feed was investigated on growth and pigmentation of blue streak hap (Labidochromis caeruleus Fryer, 1956). Fish were fed on diets containing 0 (control/T0), 3 (T3), 6 (T6) and 9 g kg(-1) (T9) of purslane extract for 60 days. Positive results in terms of weight gain (0.51 g), specific growth rate (1.23%.day(-1)) and survival rate (83.33%) were observed in the group fed with 9 g kg(-1) of purslane extract for 60 days. Furthermore, it was determined that the purslane extract had positive effects on pigmentation of blue streak hap, a prominent ornamental fish. The best coloration was achieved in blue streak hap of group T6, whose Hue (H-ab degrees) angle values varied between 83.61 +/- 1.15 and 78.10 +/- 1.35. This study is the first to include purslane extract into blue streak hap diets for its effect on growth and pigmentation. Findings from this study clearly demonstrate that using purslane extracts in diet has a positive effect on growth (T9), survival rate (T6, T9) and pigmentation (T6) of blue streak hap.