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The study was conducted to determine the optimum level of dried Spirulina in test diets for goldfish. The goldfish fed the test diet supplemented with dried Spirulina at a concentration of 1, 3 and 5% compared to the control diet without Spirulina. The color value (L, a and b) was measured by a colorsmeter after 6 weeks of feeding trial. The L value in the goldfish fed control diet was highest when compared to those fed all Spirulina supplemented diets. The a values in the goldfish fed control, 1, 3 and 5% Spirulina were 11.70, 18.87, 20.30 and 23.68, and the b values in the goldfish fed control, 1, 3 and 5% Spirulina were 18.36, 28.86, 31.74 and 35.53 respectively. Growth performance was highest in the goldfish fed test diet containing 3% dried Spirulina (p |
