Original Article |
2005, Vol.27 Supplementary I: Aquatic Science, pp.133-139
Effects of various levels of Spirulina on growth performance and pigmentation in goldfish (Carassius aurarus)
Supadha Kiriratnikom, Rattiya Zaau, and Atcharat Suwanpugdee
pp. 133 - 139
Abstract
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<0.05). The results showed the positive effect of 3-5% dried Spirulina for pigmentation in goldfish; however, the test diet supplemented with 3% Spirulina resulted in the highest growth performance in goldfish.