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Effect of Dietary Supplementation with Green Spirulina on the Survival Rate and Color Intensity of Goldfish (Carassius auratus) Marpaung, Muhd. Rizky; Afriani, Dwi Tika; Siswoyo, Bambang Hendra
Bioscientist : Jurnal Ilmiah Biologi Vol. 14 No. 2 (2026): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v14i2.20158

Abstract

This study aimed to analyze the effect of adding natural carotenoid sources to feed on the enhancement of color intensity and survival rate of fish. The study employed a Completely Randomized Design (CRD) with four treatments and three replications, namely P1 (control), P2 (6% spirulina), P3 (8% spirulina), and P4 (10% spirulina). The experiment was conducted for 30 days using 60 experimental fish. The observed parameters included color intensity and survival rate. Data were analyzed using a one-way ANOVA. The results showed a significant difference among treatments on fish color intensity (P < 0.05). Treatment P3 (8% spirulina) produced the highest color intensity value (21.12 ± 0.27), followed by P4 (10%) (20.76 ± 0.19) and P2 (6%) (20.66 ± 0.07), while the lowest value was observed in P1 (control) (20.55 ± 0.14). However, no significant difference was found in the survival rate (P > 0.05), with the highest value in P1 (93%) and the other treatments showing similar values (87%). The addition of spirulina significantly improved fish color intensity, with the 8% dosage being the most effective treatment, but it did not significantly affect the survival rate.